STOCKHOLDERS AGREEMENT


                            dated as of June 20, 1996


                                     between


                               MK RAIL CORPORATION


                                       and


                          MORRISON KNUDSEN CORPORATION









                             STOCKHOLDERS AGREEMENT

         Stockholders  Agreement  (this  "Agreement")  dated as of June 20, 1996
between  MK Rail  Corporation,  a  Delaware  corporation  (the  "Company"),  and
Morrison Knudsen Corporation, an Ohio corporation ("MKO").
                                    RECITALS

         WHEREAS,  in connection  with the  reorganization  of Morrison  Knudsen
Corporation, a Delaware corporation ("MK"), certain creditors of MK and MKO will
acquire  restricted  shares of Common  Stock held by MKO,  and the  Company  has
agreed to provide  certain  rights to such future holders to cause the shares so
acquired to be registered pursuant to the Securities Act; and

         WHEREAS,  the Company,  at the request of MK and MKO, has, by execution
of a Second Amendment to Rights Agreement (the "Rights Plan Amendments") of even
date herewith,  made certain  amendments to the Rights Agreement between MK Rail
and Chemical Mellon Shareholder  Services,  L.L.C. dated as of January 19, 1996,
as amended (the "Rights  Plan"),  in order to facilitate the obtaining by MK and
MKO of the  acceptances  required  to confirm a plan of  reorganization  that MK
contemplates  filing with the Bankruptcy  Court  pursuant to which,  among other
things, the restricted shares of Common Stock are to be transferred to creditors
of MK; and

         WHEREAS,  the  parties  hereto  desire to set forth the  rights of such
future holders and the Company's  obligations to cause the  registration  of the
Registrable Securities pursuant to the Securities Act; and

         WHEREAS,  the  Company,  MKO and such future  holders  have agreed upon
certain matters relating to the governance of the Company and to the Rights Plan
Amendment.

         NOW,  THEREFORE,  in consideration of good and valuable  consideration,
the receipt and sufficiency of which are hereby acknowledged, the parties hereto
agree as follows:

          Section 1. Definitions and Usage. As used in this Agreement:

                  1.1.  Definitions.

          Affiliate.  "Affiliate"  means  Affiliate  as  defined  in Rule  12b-2
     promulgated by the Commission under the Exchange Act.

          Agent.  "Agent"  means the  principal  placement  agent on an  agented
     placement of Registrable Securities.



                                                         1





          Bankruptcy  Court.  "Bankruptcy  Court"  shall mean the United  States
     Bankruptcy Court for the District of Delaware,  in which court the Plan has
     been filed.

          Certificate Amendment.  "Certificate Amendment" shall have the meaning
     set forth in Section 9.5.

          Commission.  "Commission"  shall mean the United States Securities and
     Exchange Commission.

          Common  Stock.  "Common  Stock" shall mean (i) the common  stock,  par
     value $.01 per share,  of the Company,  and (ii) shares of capital stock of
     the Company  issued by the Company in respect of or in exchange  for shares
     of such common stock in connection with any stock dividend or distribution,
     stock split-up, recapitalization,  recombination or exchange by the Company
     generally of shares of such common stock.

          Continuously  Effective.  "Continuously  Effective," with respect to a
     specified registration statement,  shall mean that it shall not cease to be
     effective and available for Transfers of Registrable  Securities thereunder
     for longer than either (i) any ten  consecutive  business  days, or (ii) an
     aggregate  of fifteen  business  days  during the period  specified  in the
     relevant provision of this Agreement.

          Demand Registration Request.  "Demand Registration Request" shall have
     the meaning set forth in Section 2.1(i).

          Demand Registration  Statement.  "Demand Registration Statement" shall
     have the meaning set forth in Section 2.1(i).

          Demanding  Holders.  "Demanding  Holders"  shall have the  meaning set
     forth in Section 2.1(i).

          Distribution  Date.  "Distribution  Date"  shall mean the date MK Rail
     Common  Stock  owned by MKO on the date  hereof  has  been  distributed  to
     creditors of MKO in any case under Title 11 of the United States Bankruptcy
     Code or through a  foreclosure  against MKO.  Election  Request.  "Election
     Request" shall have the meaning set forth in Section 9.6.

          Exchange Act. "Exchange Act" shall mean the Securities Exchange Act of
     1934, as amended, and the rules and regulations promulgated thereunder.

          Holder.  "Holders"  shall mean MKO and the  Transferees  of the Common
     Stock held by MKO or their Transferees in accordance with Section 8.


                                                         2





          Majority  Selling  Holders.  "Majority  Selling  Holders"  means those
     Selling  Holders whose  Registrable  Securities  included in a registration
     represent a majority of the  Registrable  Securities of all Selling Holders
     included therein.

          Market Value.  "Market Value" of Registrable  Securities as of a given
     date shall mean the average  closing price for such securities over the ten
     (10) business days immediately  preceding said date as quoted on the NASDAQ
     National  Market  System or such other  securities  exchange  on which said
     securities are listed.

          Note Cancellation Agreement. "Note Cancellation Agreement" shall refer
     to the Note Cancellation and Restructuring  Agreement of even date herewith
     by and among the Company, MKO and MK.

          Outside  Director.  "Outside  Director"  shall mean a director  of the
     Company who (i) is not and has not been  employed by MK, MKC or the Company
     or their respective  subsidiaries in an executive  capacity within the five
     years  immediately prior to the annual meeting at which the nominees of the
     board of directors  will be voted upon;  (ii) is not (and is not affiliated
     with a company or a firm that is) a  significant  advisor or  consultant to
     the Company or its subsidiaries; (iii) is not affiliated with a significant
     customer or supplier of the Company or its subsidiaries; (iv) does not have
     significant   personal  services   contract(s)  with  the  Company  or  its
     subsidiaries;  (v) is not affiliated with a tax-exempt entity that receives
     significant contributions from the Company or its subsidiaries; and (vi) is
     not a spouse,  parent,  sibling  or child or any  person  described  by (i)
     through (v) of this definition.

          Person. "Person" shall mean any individual, corporation,  partnership,
     joint venture, association, joint-stock company, limited liability company,
     trust,  unincorporated  organization  or  government  or  other  agency  or
     political subdivision thereof.

          Piggyback Registration  Statement.  "Piggyback Registration Statement"
     shall have the meaning set forth in Section 3.

          Plan. "Plan" shall mean the plan of reorganization with respect to MK,
     which plan of  reorganization  shall  contain  substantially  the terms set
     forth in  Exhibit C to the Note  Cancellation  Agreement  and which plan of
     reorganization   shall  not  contain  any  terms  or  provisions  that  are
     inconsistent  with the Note Cancellation  Agreement,  this Agreement or the
     terms set forth in such Exhibit C.

          Register, Registered and Registration.  "Register",  "registered", and
     "registration"  shall refer to a  registration  effected by  preparing  and
     filing a registration  statement or similar document in compliance with the
     Securities  Act,  and the  declaration  or  ordering by the  Commission  of
     effectiveness of such registration statement or document.

          Registrable Securities.  "Registrable  Securities" shall mean, subject
     to  Section  8:  (i)  the  Shares  owned  by the  Holders  on any  date  of
     determination, (ii) any shares of Common

                                                         3





     Stock or other  securities  issued as (or issuable  upon the  conversion or
     exercise  of any  warrant,  right or other  security  which is issued as) a
     dividend  or other  distribution  with  respect  to, or in  exchange by the
     Company  generally for, or in replacement by the Company generally of, such
     Shares;  and (iii) any  securities  issued in  exchange  for  Shares in any
     merger  or  reorganization  of  the  Company;   provided,   however,   that
     Registrable   Securities  shall  not  include  any  securities  which  have
     theretofore  been  registered  and sold to the public in a bona fide public
     offering  pursuant  to the  Securities  Act or which  have been sold to the
     public  pursuant  to  Rule  144  or any  similar  rule  promulgated  by the
     Commission pursuant to the Securities Act.

          Registrable Securities then outstanding.  "Registrable Securities then
     outstanding"  shall mean, with respect to a specified  determination  date,
     the Registrable Securities owned by all Holders on such date.

          Registration Expenses.  "Registration Expenses" shall have the meaning
     set forth in Section 6.1.

          Securities  Act.  "Securities  Act" shall mean the  Securities  Act of
     1933, as amended, and the rules and regulations promulgated thereunder.

          Selling  Holders.  "Selling  Holders"  shall mean,  with  respect to a
     specified   registration   pursuant  to  this   Agreement,   Holders  whose
     Registrable Securities are included in such registration.

          Shares.  "Shares"  shall mean the shares of Common  Stock  acquired by
     certain creditors of MK in connection with the reorganization of MK.

          Shelf Registration  Statement.  "Shelf  Registration  Statement" shall
     have the meaning set forth in Section 2.2.

          Standstill Termination Date. "Standstill  Termination Date" shall have
     the meaning set forth in Section 9.2.

          Stockholders  Meeting.  "Stockholders  Meeting" shall have the meaning
     set forth in Section 9.7.

          Substantial  Stockholder.  "Substantial  Stockholder"  shall  mean any
     Person beneficially owning 5% of more of the outstanding Common Stock.

          Transfer.  "Transfer"  shall  mean  and  include  the act of  selling,
     giving, transferring,  creating a trust (voting or otherwise), assigning or
     otherwise  disposing of (other than  pledging,  hypothecating  or otherwise
     transferring  as security) (and  correlative  words shall have  correlative
     meanings);  provided  however,  that any transfer or other disposition upon
     foreclosure  or other  exercise of remedies of a secured  creditor after an
     event of default under or with respect to a

                                                         4





     pledge,  hypothecation  or other  transfer as security  shall  constitute a
     "Transfer."  "Transferee"  shall mean any Person who acquires  Common Stock
     pursuant to a Transfer.

          Underwriters'  Representative.  "Underwriters'  Representative"  shall
     mean  the   managing   underwriter,   or,  in  the  case  of  a  co-managed
     underwriting, the lead manager.

          Violation.  "Violation"  shall have the  meaning  set forth in Section
     7.1.


         1.2. Usage.

     (i)  References  to a  Person  are  also  references  to  its  assigns  and
          successors  in  interest  (by any means  whatever,  including  merger,
          consolidation or sale of all or  substantially  all the assets of such
          Person or otherwise, as the case may be).

     (ii) References to Registrable Securities "owned" by a Holder shall include
          Registrable Securities beneficially owned by such Person but which are
          held of record in the name of a nominee, trustee,  custodian, or other
          agent,  but shall  exclude  shares of  Common  Stock  held by a Holder
          (other  than the  liquidating  trust  contemplated  by the  Plan) in a
          fiduciary capacity for customers of such Person.

     (iii)References  to a document are to it as amended,  waived and  otherwise
          modified  from  time to time  and  references  to a  statute  or other
          governmental  rule are to it as amended and  otherwise  modified  from
          time to time (and  references to any  provision  thereof shall include
          references to any successor provision).

     (iv) References  to Sections or to  Schedules  or Exhibits  are to sections
          hereof or schedules or exhibits hereto,  unless the context  otherwise
          requires.

     (v)  The  definitions  set forth herein are equally  applicable both to the
          singular and plural forms and the feminine, masculine and neuter forms
          of the terms defined.

     (vi) The term  "including"  and  correlative  terms  shall be  deemed to be
          followed by "without limitation" whether or not followed by such words
          or words of like import.

     (vii)The term  "hereof"  and  similar  terms refer to this  Agreement  as a
          whole.

     (viii) The "date of" any notice or request given pursuant to this Agreement
          shall be determined in accordance with Section 12.2.


                                                         5





         Section 2. Demand and Shelf Registration Statements.

     2.1. (i) At any time during the period  commencing on the date of the first
filing by the  Company  of its  Annual  Report on Form  10-K  that  follows  the
effective date of the Plan and ending on the fifth anniversary  thereof,  one or
more  Holders  of  Registrable  Securities  may at their  option  make a written
request  (a  "Demand  Registration  Request")  to the  Company  (the  "Demanding
Holders")  requesting  that the Company file with the  Commission a registration
statement  on  an   appropriate   form  under  the  Securities  Act  (a  "Demand
Registration Statement") to register (subject to Section 2.6) all or such number
of such Demanding Holder's Registrable  Securities as the Demanding Holder shall
request in writing;  provided,  however, that no request may be made pursuant to
this Section 2.1 if (A) within twelve months prior to the date of such request a
Demand  Registration  Statement  pursuant  to this  Section  2.1 shall have been
declared effective by the Commission or (B) the Registrable  Securities that the
Demanding  Holders request be included in the Demand  Registration  Statement do
not have a Market Value as of the date the request is given to the Company of at
least  $5,000,000.  Notwithstanding  the  foregoing,  in no event shall a Demand
Registration  Request be effective  unless and until the Registrable  Securities
that the Demanding  Holders request be included in the Demand  Registration  and
that other Holders  request be included in the Demand  Registration  pursuant to
Section  2.1(iii) hereof have an aggregate Market Value determined as of the day
the last such  request is received of at least  $20,000,000.  After an effective
Demand Registration  Request is made, the Company shall file with the Commission
the Demand  Registration  Statement.  Any Demand  Registration  Statement  shall
relate to an underwritten  offering (whether on a "firm," "best efforts" or "all
reasonable  efforts"  basis or  otherwise)  or an agented  offering.  Any Demand
Registration Request made pursuant to this Section 2.1 shall be addressed to the
attention  of the  Secretary  of the  Company  and shall  specify  the number of
Registrable  Securities to be  registered,  the intended  methods of disposition
thereof and that the request is for a Demand Registration  Statement pursuant to
this Section 2.1.

     (ii) The  Company  shall be  entitled  to  postpone  for up to 120 days the
filing of any Demand  Registration  Statement  otherwise required to be prepared
and filed  pursuant  to this  Section 2.1 if (A) the Board of  Directors  of the
Company  determines,   in  its  good  faith  reasonable   judgment,   that  such
registration  and the Transfer of Registrable  Securities  contemplated  thereby
would  materially  interfere  with, or require the premature  disclosure of, any
financing,  acquisition  or  reorganization  involving the Company or any of its
subsidiaries  or would otherwise  require the premature  disclosure of any other
material nonpublic  information as to which the Company has a bona fide business
purpose for maintaining its  confidentiality  and (B) the Company promptly gives
the  Demanding  Holders  notice of such  determination  (which  notice  need not
disclose the fact, event or information);  provided,  however,  that the Company
shall not have,  within the twelve months prior to the date of the postponement,
postponed  pursuant  to this  Section  2.1(ii)  the  filing of any other  Demand
Registration  Statement  that was  subsequently  abandoned  because  the  Demand
Registration Request relating thereto was withdrawn.

     (iii) Whenever the Company  receives a demand pursuant to Section 2.1(i) to
effect  the  registration  of any  Registrable  Securities,  the  Company  shall
promptly give written notice of

                                                         6





such proposed  registration  to all Holders.  Any such Holder may, within thirty
days after receipt of such notice,  request in writing that all of such Holder's
Registrable  Securities,  or any portion thereof  designated by such Holder,  be
included in the registration.

     2.2.  As soon as  practicable  after  the  later  of (i) the  entry  by the
Bankruptcy Court of the order approving the assumption of this Agreement and the
transactions  contemplated  hereby and (ii) July 1, 1996, the Company shall file
with the Commission a registration  statement on Form S-3 in accordance with the
Securities Act for an offering on a delayed or continuous basis pursuant to Rule
415 under the Securities Act (the "Shelf Registration  Statement").  The Company
shall use its reasonable best efforts to have the Shelf  Registration  Statement
declared effective on the effective date of the Plan. Subject to compliance with
the  provisions  of Section 5, the  Holders  shall be  entitled to have all or a
portion  of  such  Holders'   Registrable   Securities  included  in  the  Shelf
Registration Statement.

     2.3.  The  Company  shall be  obligated  to effect no more than four Demand
Registration  Statements  pursuant  to  this  Agreement.  For  purposes  of  the
preceding sentence, a Demand Registration  Statement shall not be deemed to have
been  effected (i) unless a  registration  statement  with  respect  thereto has
become  effective,   (ii)  if  after  such  registration  statement  has  become
effective,  such  registration  or the related offer,  sale or  distribution  of
Registrable  Securities  thereunder  is  interfered  with  by  any  stop  order,
injunction or other order or requirement of the Commission or other governmental
agency or court for any reason not  attributable  to any of the Selling  Holders
and such interference is not thereafter  eliminated,  or (iii) if the conditions
to  closing  specified  in  any  underwriting  agreement  containing  usual  and
customary  terms  entered  into in  connection  with such  registration  are not
satisfied or waived, other than by reason of a failure on the part of any of the
Selling Holders.  The Company's obligation to effect a given Demand Registration
pursuant to Section 2.1 shall be deemed to have been  satisfied upon the earlier
of (x) the date as of which all of the Registrable  Securities  included therein
shall have been disposed of pursuant to the Demand Registration  Statement,  and
(y) the date as of which  such  Demand  Registration  Statement  shall have been
Continuously Effective for a period of 90 days.

     2.4.  Whenever  the Company  receives a request  for a Demand  Registration
Statement  pursuant to Section 2.1, the Company shall have the right to register
in any such Demand Registration Statement and to include in any related offering
shares of authorized  but unissued  Common  Stock.  The Company may exercise the
foregoing  option to include  additional  shares by written notice  delivered to
each of the Selling  Holders within 30 days  following the Company's  receipt of
the  request for a Demand  Registration  Statement  pursuant to Section 2.1(i). 

     2.5. In any Demand Registration Statement, the managing or lead underwriter
or underwriters (for an underwritten offering) or the lead agent (for an agented
offering) shall be a nationally recognized firm selected by the Majority Selling
Holders  with  the  approval  of  the  Company,  which  approval  shall  not  be
unreasonably withheld.

     2.6 Whenever the Company effects a Demand  Registration  Statement pursuant
to Section 2.1, if the Underwriters' Representative or Agent advises the Company
and each  Selling

                                                         7





Holder in writing that, in its opinion, the amount of securities requested to be
included  in such  offering  (whether  by the  Company or the  Selling  Holders)
exceeds  the  amount  which can be sold in such  offering  within a price  range
acceptable to the Majority  Selling  Holders,  the  securities to be included in
such  offering and the related  registration  shall be reduced in the  following
order to an amount which can be sold within such price range:  first, the amount
of  securities,  if any,  that the  Company  has  requested  be  included in the
offering and registration shall be reduced until no such securities are included
therein;  and  second,  the amount of  Registrable  Securities  that the Selling
Holders have  requested be included in the  offering and  registration  shall be
reduced on a pro rata basis  among all  Selling  Holders  based on the  relative
number of securities each has requested be included in such offering.

     2.7. Notwithstanding anything in this Agreement to the contrary, neither MK
nor MKO shall have the right to dispose of any Registrable  Securities  pursuant
to any registration statement effected pursuant to Sections 2 or 3.

Section 3. Piggyback Registration Statements.

     3.1. If at any time the Company  proposes to register  (including  for this
purpose a registration  effected by the Company for  stockholders of the Company
other  than  the  Holders)  equity  securities  or  securities   convertible  or
exchangeable  into equity securities under the Securities Act in connection with
a public  offering  solely for cash (other than by a registration on Form S-4 or
S-8 or any successor or similar  forms or filed in  connection  with an exchange
offer  or  any  offering  of  securities   solely  to  the  Company's   existing
stockholders or otherwise pursuant to a dividend reinvestment plan or a dividend
reinvestment and stock purchase plan, and other than pursuant to Section 2), the
Company shall promptly give each Holder of Registrable Securities written notice
of such registration (a "Piggyback  Registration  Statement").  Upon the written
request of each Holder given  within  fifteen  days  following  the date of such
notice,  the Company shall cause to be included in such  registration  statement
and use its  reasonable  best efforts to be registered  under the Securities Act
all the Registrable  Securities that each such Holder shall have requested to be
registered;  provided,  however, that such right of inclusion shall not apply to
any registration  statement covering an underwritten  offering of convertible or
exchangeable  securities  or equity  securities  other than Common  Stock if the
Underwriters'  Representative or Agent shall advise the Company in writing (with
a copy to each  Selling  Holder) that in its  opinion,  the kind of  Registrable
Securities  requested  to be included in the  Piggyback  Registration  Statement
would  adversely   affect  the  offering  of  the  convertible  or  exchangeable
securities or equity  securities or the timing  thereof.  The Company shall have
the  absolute  right at any time to  withdraw  or cease to  prepare  or file any
registration  statement  for any offering  referred to in this Section 3 without
any obligation or liability to any Holder.


     3.2 If the  Underwriters'  Representative or Agent shall advise the Company
in writing (with a copy to each Selling Holder) that, in its opinion, the amount
of securities requested to be included in such offering (whether by the Company,
the Selling Holders or other selling  stockholders) exceeds the amount which can
be sold in such offering within a price range

                                                         8





acceptable  to the Company,  the  securities to be included in such offering and
the related  registration  shall be reduced in the following  order to an amount
which can be sold within such price range:  first the amount of securities to be
included in the offering and registration by any selling  stockholder other than
the Selling  Holders  shall be reduced  until no such  securities  are  included
therein;  second, the amount of Registrable  Securities that the Selling Holders
have requested be included in the offering and registration  shall be reduced on
a pro rata basis  among all  Selling  Holders  based on the  relative  number of
securities  each has  requested  be included in such  offering;  and third,  the
amount of  securities  to be included in the  offering and  registration  by the
Company shall be reduced.

     3.3 During the term of this  Agreement,  each  Holder  shall be entitled to
have its  Registrable  Securities  included in an unlimited  number of Piggyback
Registration Statements pursuant to this Section 3.

     3.4 If the Company  has  previously  filed a  registration  statement  with
respect to Registerable  Securities  pursuant to Section 2.1 or pursuant to this
Section 3, and if such previous registration statement has not been withdrawn or
abandoned,  the  Company  will  not  file or  cause  to be  effected  any  other
registration  of any of its  equity  securities  or  securities  convertible  or
exchangeable  into or exercisable for its equity securities under the Securities
Act (except on Form S-8 or any successor form),  whether on its own behalf or at
the request of any holder or holders of such  securities,  until a period of 180
days  has  elapsed  from  the  effective  date of such a  previous  registration
statement.

Section 4. Registration Procedures. Whenever required under Section 2 or Section
3 to effect the registration of any Registrable  Securities,  the Company shall,
as expeditiously as practicable:

     4.1.  Prepare and file with the  Commission a  registration  statement with
respect to such  Registrable  Securities,  subject to Section  2.2,  and use the
Company's reasonable best efforts to cause such registration statement to become
effective,  in each  instance  giving due regard to the need to prepare  current
financial statements,  conduct due diligence and complete other actions that are
reasonably necessary to effect a registered public offering;  provided, however,
that before filing a  registration  statement or prospectus or any amendments or
supplements  thereto,  including  documents  incorporated by reference after the
initial filing of the registration statement and prior to effectiveness thereof,
the  Company  shall use its  reasonable  efforts to furnish to one firm of legal
counsel for the Selling  Holders  (selected  by the  Majority  Selling  Holders)
copies of all such documents in the form  substantially  as proposed to be filed
with the  Commission  at least five business days prior to filing for review and
comment by such counsel.

     4.2.  (i) Use the  Company's  reasonable  best efforts to keep the relevant
registration  statement  Continuously  Effective  (x) if a  Demand  Registration
Statement,  for up to 90 days or until  such  earlier  date as of which  all the
Registrable  Securities under the Demand Registration  Statement shall have been
disposed of in the manner described in the Demand  Registration  Statement,  and
(y) if a Shelf  Registration  Statement,  subject to the  immediately  following
sentence,

                                                         9





for three years. As soon as reasonably  practicable  after the occurrence of any
fact or event that makes  untrue any  statement  of a material  fact made in the
Shelf Registration  Statement or that requires the making of any additions to or
changes  in the Shelf  Registration  Statement  in order to make the  statements
therein,  in light of the circumstances in which they were made, not misleading,
the  Company  shall  prepare and file a  supplement  or  amendment  to the Shelf
Registration Statement or related prospectus, or a document incorporated therein
by reference,  so that such Shelf Registration  Statement and related prospectus
shall not  contain  any such  untrue  statement  of a material  fact or any such
omission of a material fact; provided,  however,  that if the Board of Directors
of the  Company  determines,  in its good faith  reasonable  judgment,  that the
Transfer of Registrable  Securities pursuant to the Shelf Registration Statement
would  materially  interfere  with, or require the premature  disclosure of, any
financing,  acquisition  or  reorganization  involving the Company or any of its
subsidiaries  or  otherwise  would  require  premature  disclosure  of any other
material nonpublic  information as to which the Company has a bona fide business
purpose  for  maintaining  its  confidentiality,   then  for  so  long  as  such
circumstances  or such business  purpose  continues to exist  (provided that the
number of days of any such suspension may not exceed an aggregate of 120 days in
any  calendar  year),  the Company  shall not be required to prepare or file any
such supplement, amendment or document.

     (ii) Each Holder agrees by acquisition of a Registrable Security that, upon
receipt of any notice from the Company of the  existence of any fact or event of
the kind described in Section  2.1(ii) or 4.2(i) (which notice need not disclose
the fact,  event or  information),  such Holder will forthwith  discontinue  the
disposition of any  Registrable  Securities  pursuant to the Shelf  Registration
Statement until such Holder's receipt of the copies of a supplemented or amended
prospectus as contemplated by Section 4.2(i),  or until it is advised in writing
by the Company that the use of the prospectus  related to the Shelf Registration
Statement  may be  resumed,  and,  has  received  copies  of any  additional  or
supplemental  filings that are incorporated by reference in such prospectus.  If
so directed by the Company,  each Holder will deliver to the Company all copies,
other than  permanent  file  copies  then in such  Holder's  possession,  of the
prospectus covering such Registrable  Securities that was current at the time of
receipt of such notice.

     (iii)  Notwithstanding  the  foregoing,   if,  in  the  case  of  a  Demand
Registration  Statement,  the filing of a registration statement is postponed as
permitted by Section 2.1(ii), or, in the case of a Shelf Registration Statement,
the preparation and filing of a supplement,  amendment or incorporated  document
is postponed as permitted by Section  4.2(i) or Section  4.2(ii),  the five-year
period for filing a Demand  Registration  Statement or the three-year  period of
effectiveness of the Shelf Registration  Statement, as the case may be, shall be
extended by the aggregate number of days of such postponement.

     4.3.  Subject to Section 4.2(i),  prepare and file with the Commission such
amendments, supplements or incorporated documents to such registration statement
and the prospectus used in connection with such registration statement as may be
necessary to comply with the  provisions of the  Securities  Act with respect to
the disposition of all securities covered by such registration statement. If the
registration  statement is for an underwritten offering, the Company shall amend
the registration statement or supplement the prospectus whenever required by the

                                                        10





terms of the underwriting agreement entered into pursuant to Section 4.6. In the
event that any  Registrable  Securities  included  in a  registration  statement
subject  to, or  required  by, this  Agreement  remain  unsold at the end of the
period during which the Company is obligated to use its reasonable  best efforts
to maintain the  effectiveness of such registration  statement,  the Company may
file a post-effective amendment to the registration statement for the purpose of
removing such securities from registered status.

     4.4. Furnish to each Selling Holder of Registrable Securities copies of the
registration statement,  any pre-effective or post-effective  amendment thereto,
the  prospectus,  including  each  preliminary  prospectus and any amendments or
supplements  thereto,  in each case in conformity  with the  requirements of the
Securities Act.

     4.5. Use the Company's  reasonable best efforts (i) to register and qualify
the securities  covered by such  registration  statement under the securities or
Blue Sky laws of such states or jurisdictions  as shall be reasonably  requested
by the Underwriters' Representative or Agent (as applicable, or if inapplicable,
the Majority  Selling  Holders),  and (ii) to obtain the withdrawal of any order
suspending the effectiveness of a registration  statement, or the lifting of any
suspension of the qualification  (or exemption from  qualification) of the offer
and transfer of any of the Registrable  Securities in any  jurisdiction,  at the
earliest practicable moment;  provided,  however,  that the Company shall not be
required in  connection  therewith  or as a  condition  thereto to qualify to do
business,  subject itself to taxation or to file a general consent to service of
process in any states or jurisdictions where it is not now so subject.

     4.6. In the event of Demand Registration Statement,  enter into and perform
the Company's  obligations under an underwriting or agency agreement  (including
indemnification  and  contribution  obligations of underwriters  or agents),  in
usual and customary  form,  with the managing  underwriter or underwriters of or
agents for such  offering.  The Company shall also  cooperate  with the Majority
Selling Holders and the Underwriters'  Representative or Agent for such offering
in the marketing of the  Registrable  Securities,  including  making  reasonably
available the Company's  officers,  accountants,  counsel,  premises,  books and
records for such purpose.

     4.7.  Promptly  notify  each  Selling  Holder of any stop  order  issued or
threatened to be issued by the Commission in connection  therewith (and take all
reasonable actions required to prevent the entry of such stop order or to remove
it if entered).

     4.8. Make generally available to the Company's security holders an earnings
statement  satisfying  the  provisions of Section 11(a) of the Securities Act no
later than 90 days following the end of the 12-month  period  beginning with the
first month of the Company's first fiscal quarter commencing after the effective
date of each registration statement filed pursuant to this Agreement.

     4.9. Make reasonably  available for inspection by any Selling  Holder,  any
underwriter  participating  in such  offering  and the  representatives  of such
Selling Holder and  Underwriter  (but not more than one firm of legal counsel to
such Selling Holders), all financial

                                                        11





and other information as shall be reasonably  requested by them, and provide the
Selling  Holder,  any  underwriter   participating  in  such  offering  and  the
representatives  of such  Selling  Holder and  Underwriter  the  opportunity  to
discuss the business  affairs of the Company with its principal  executives  and
independent   public  accountants  who  have  certified  the  audited  financial
statements included in such registration  statement,  in each case to the extent
necessary to enable them to exercise  their due diligence  responsibility  under
the  Securities  Act;  provided,  however,  that  information  that the  Company
determines, in good faith, to be confidential and which the Company advises such
Person in writing,  is  confidential  shall not be disclosed  unless such Person
signs a confidentiality agreement reasonably satisfactory to the Company.

     4.10. In the event of a Demand  Registration  Statement,  use the Company's
reasonable best efforts to obtain a "comfort letter" from its independent public
accountants  and legal  opinions  of counsel  to the  Company  addressed  to the
Selling  Holders,  in  customary  form and  covering  such  matters  of the type
customarily  covered  by such  letters  and in a form that  shall be  reasonably
satisfactory to the Majority Selling Holders.  The Company shall furnish to each
Selling Holder a signed counterpart of any such comfort letter or legal opinion.
Delivery of any comfort letter shall be subject to the recipient furnishing such
written  representations  or  acknowledgments  as are  customarily  provided  by
selling  stockholders who receive such comfort letters under SAS No. 72. Nothing
in the  immediately  preceding  sentence  shall be deemed  to  require a Selling
Holder to make  representations  and warranties if the Selling Holder is willing
to  receive a letter in the form to be  provided  to  selling  stockholders  not
making representations and warranties under SAS No. 76.

     4.11. Provide and cause to be maintained a transfer agent and registrar for
all Registrable Securities covered by such registration statement from and after
a date not later than the effective date of such registration statement.

     4.12.  Use all  reasonable  efforts  to cause  the  Registrable  Securities
covered by such registration  statement, if the Common Stock is then listed on a
securities exchange or included for quotation in a recognized trading market, to
continue to be so listed or included for a  reasonable  period of time after the
offering.

Section 5. Holders' Obligations.

     5.1. It shall be a condition precedent to the obligations of the Company to
take any action  pursuant  to this  Agreement  with  respect to the  Registrable
Securities of any Selling  Holder of  Registrable  Securities  that such Selling
Holder shall:

     (i)  furnish to the Company such information  regarding such Selling Holder
          and its  affiliates,  the number of Registrable  Securities  owned and
          proposed to be sold by it, the intended  method of disposition of such
          securities  and any other  information  as shall be required to effect
          the registration of such Selling Holder's Registrable Securities,  and
          cooperate  with the Company in preparing such  registration  statement
          and in complying with the requirements of the Securities Act;

                                                        12





     (ii) agree to sell their Registrable  Securities to the underwriters at the
          same price and on  substantially  the same terms and conditions as the
          Company  or  the  other  Persons  on  whose  behalf  the  registration
          statement  was being filed have agreed to sell their  securities,  and
          execute the  underwriting  agreement  agreed to by the Company and the
          Majority Selling Holders and customary custody  arrangements,  lock-up
          letters,  indemnities,  questionnaires and other documents  reasonably
          required by the  underwriters  or agents and agreed to by the Majority
          Selling Holders.

     5.2.  In the event  that a Demand  Registration  Statement  or a  Piggyback
Registration Statement becomes effective,  if and to the extent requested by the
managing  underwriter or lead agent for the offering relating thereto, no Holder
shall  offer,  sell or agree to sell or  otherwise  dispose of or  transfer  any
Registrable  Securities  or  securities  convertible  into  or  exchangeable  or
exercisable  for any  Registrable  Securities  (other  than,  in the case of the
Selling   Holders   under  the  Demand   Registration   Statement  or  Piggyback
Registration  Statement,  pursuant  to such  Demand  Registration  Statement  or
Piggyback Registration  Statement, as the case may be), or exercise any right to
register any such securities, during the period commencing ten days prior to the
anticipated  effective date of such  registration  statement and ending 120 days
from the effective date of such registration  statement. In order to enforce the
foregoing  agreement,  the Company  shall be  entitled  to impose  stop-transfer
instructions with respect to the Registrable Securities of each Holder until the
end of such period.

Section 6. Expenses of Registration.  Expenses in connection with  registrations
pursuant to this Agreement shall be allocated and paid as follows:

     6.1 With respect to the Shelf  Registration  Statement,  MKO shall bear and
pay or shall  reimburse  the  Company  for,  and  with  respect  to each  Demand
Registration  Statement,  the Company  shall bear and pay,  all of the  expenses
incurred  in  connection  with the  registration  and  offering  of  Registrable
Securities  with  respect  to  such  Shelf  Registration   Statement  or  Demand
Registration Statement,  as the case may be, including,  but not limited to, all
registration,  filing and National Association of Securities Dealers, Inc. fees,
all fees and expenses of complying  with  securities or blue sky laws,  all word
processing and duplicating expenses,  messenger and delivery expenses,  the fees
and disbursements of counsel for the Company,  the fees and disbursements of the
Company's  independent  public  accountants,  including  the  expenses  of "cold
comfort" letters required by or incident to such performance and compliance, and
all printing  expenses  (including the printing of  certificates  evidencing the
Registrable  Securities and the printing of the  registration  statement and any
related prospectus,  or any amendment or supplement thereto) (collectively,  the
"Registration Expenses"); provided, however, that, the Selling Holders shall pay
(i)  underwriting   discounts  and  commissions   relating  to  the  Registrable
Securities sold by them pursuant to any such registration statement and (ii) all
fees and disbursements of counsel and any other advisors to the Selling Holders.
Notwithstanding  the foregoing,  in no event shall the  obligations of MKO under
this  Section  6.1 exceed  $75,000 in the  aggregate.  In no event  shall MKO be
responsible for the expenses of a Demand Registration  Statement.  To the extent
MKO is not required by this Section to pay or reimburse the Company for expenses
incurred in connection with a Shelf Registration

                                                        13





Statement,  those  expenses  shall be borne and paid by the  Company,  except as
expressly otherwise provided in the first sentence of this Section.

     6.2 The Company shall bear and pay all  Registration  Expenses  incurred in
connection  with any Piggyback  Registration  Statements  pursuant to Section 3,
other than (i)  underwriting  discounts and commissions  relating to Registrable
Securities,  (ii) the portion of any filing fees  allocable  to the  Registrable
Securities  included in such  registration by the Holders and (iii) the fees and
disbursements  of any counsel and other advisors to the Selling Holders (each of
which  expenses in clauses (i) and (ii) shall be paid on a pro rata basis by the
Selling   Holders  of   Registrable   Securities   included  in  such  Piggyback
Registration Statement and which expenses in clause (iii) shall be paid on a pro
rata basis by the Selling Holders for which the expenses are incurred).

Section 7.  Indemnification;  Contribution.  If any  Registrable  Securities are
included in a registration statement under this Agreement:

     7.1. To the extent permitted by applicable law, the Company shall indemnify
and hold harmless each Selling Holder,  its directors,  officers,  shareholders,
employees, investment advisors, agents and Affiliates, either direct or indirect
(and  each  such  Affiliate's  directors,  officers,  shareholders,   employees,
investment advisors and agents) and each other Person, if any, who controls such
Selling  Holder  within the  meaning of the  Securities  Act against any and all
losses, claims, damages, liabilities and expenses, including attorneys' fees and
disbursements and expenses of investigation,  incurred by such party pursuant to
any actual or threatened action, suit, proceeding or investigation, to which any
of the  foregoing  Persons may become  subject  under the  Securities  Act,  the
Exchange Act or other  federal or state laws,  insofar as such  losses,  claims,
damages,  liabilities  and  expenses  arise out of or are based  upon any untrue
statement  or alleged  untrue  statement  of a material  fact  contained in such
registration statement, including any preliminary prospectus or final prospectus
contained therein, or any amendments or supplements  thereto, or the omission or
alleged omission to state therein a material fact required to be stated therein,
or necessary to make the  statements  therein not  misleading  (collectively,  a
"Violation");  provided,  however,  that the  indemnification  required  by this
Section  7.1 shall not apply to  amounts  paid in  settlement  of any such loss,
claim,  damage,  liability or expense if such settlement is effected without the
consent of the Company (which consent shall not be unreasonably  withheld),  nor
shall the Company be liable in any such case for any such loss,  claim,  damage,
liability  or  expense  to the  extent  that it arises out of or is based upon a
Violation  which  occurs  in  reliance  upon  and  in  conformity  with  written
information  furnished to the Company by the indemnified party expressly for use
in connection with such registration.

     7.2. To the extent  permitted by applicable  law, each Selling Holder shall
indemnify and hold harmless the Company, its directors, officers,  shareholders,
employees, investment advisors, agents and Affiliates, either direct or indirect
(and  each  such  Affiliate's  directors,  officers,  shareholders,   employees,
investment  advisors and agents) and each other Person, if any, who controls the
Company within the meaning of the  Securities  Act, any other Selling Holder and
any  controlling  Person of any such other  Selling  Holder  against any and all
losses, claims,

                                                        14





damages,  liabilities and expenses,  including attorneys' fees and disbursements
and expenses of investigation,  incurred by such party pursuant to any actual or
threatened  action,  suit,  proceeding  or  investigation,  to which  any of the
foregoing  Persons may otherwise  become subject under the  Securities  Act, the
Exchange Act or other  federal or state laws,  insofar as such  losses,  claims,
damages,  liabilities and expenses arise out of or are based upon any Violation,
in each case to the extent (and only to the extent) that such  Violation  occurs
in reliance upon and in conformity  with written  information  furnished by such
Selling Holder expressly for use in connection with such registration statement;
provided,  however,  that (x) the  indemnification  required by this Section 7.2
shall not apply to amounts paid in settlement of any such loss,  claim,  damage,
liability  or expense if  settlement  is  effected  without  the  consent of the
relevant  Selling Holder of Registrable  Securities,  which consent shall not be
unreasonably  withheld,  (y) in no event shall the amount of any indemnity under
this Section 7.2 and of the  contribution  obligation of a Selling  Holder under
Section 7.4 exceed the net proceeds  from the  applicable  offering  received by
such Selling Holder, and (z) the obligation to provide indemnification hereunder
shall be several, and not joint and several, among the indemnifying parties.

     7.3. Promptly after receipt by an indemnified party under this Section 7 of
notice of the  commencement of any action,  suit,  proceeding,  investigation or
threat thereof made in writing for which such indemnified party may make a claim
under this Section 7, such  indemnified  party shall deliver to the indemnifying
party a written  notice of the  commencement  thereof.  The  failure  to deliver
written notice to the indemnifying  party within a reasonable time following the
commencement of any such action, if and to the extent materially  prejudicial to
its ability to defend such action,  shall relieve such indemnifying party of any
liability  to the  indemnified  party under this Section 7 but shall not relieve
the  indemnifying  party of any  liability  that it may have to any  indemnified
party otherwise than pursuant to this Section 7. Any fees and expenses  incurred
by the indemnified party (including any fees and expenses incurred in connection
with  investigating  or preparing to defend such action or proceeding)  shall be
paid to the indemnified party, as incurred, within thirty days of written notice
thereof to the  indemnifying  party  (regardless  of  whether  it is  ultimately
determined  that  an  indemnified  party  is  not  entitled  to  indemnification
hereunder).  Any such indemnified  party shall have the right to employ separate
counsel  in any such  action,  claim or  proceeding  and to  participate  in the
defense thereof, but the fees and expenses of such counsel shall be the expenses
of such indemnified party unless (i) the indemnifying party shall have failed to
promptly  assume the defense of such  action,  claim or  proceeding  or (ii) the
named parties to any such action,  claim or proceeding  (including any impleaded
parties)  include both such indemnified  party and the  indemnifying  party, and
such indemnified  party shall have been advised by its counsel that there may be
one or more  legal  defenses  available  to it which  are  different  from or in
addition to those available to the indemnifying  party and that the assertion of
such defenses would create a conflict of interest such that counsel  employed by
the indemnifying party could not represent the indemnified party (in which case,
if such  indemnified  party notifies the  indemnifying  party in writing that it
elects to employ separate counsel at the expense of the indemnifying  party, the
indemnifying  party  shall  not have the  right to assume  the  defense  of such
action,  claim or  proceeding  on behalf  of such  indemnified  party;  it being
understood,  however,  that the indemnifying party shall not, in connection with
any one such action,  claim or proceeding or separate but substantially  similar
or

                                                        15





related actions,  claims or proceedings in the same jurisdiction  arising out of
the same general allegations or circumstances, be liable for the reasonable fees
and  expenses  of more  than  one  separate  firm of  attorneys  (together  with
appropriate local counsel) at any time for all such indemnified parties,  unless
the indemnified  party shall have been advised by its counsel that a conflict of
interest  may  exist  between  such  indemnified  party  and any  other  of such
indemnified  parties with respect to such action,  claim or proceeding such that
the counsel  could not  represent  the  indemnified  party and any other of such
indemnified parties, in which event the indemnifying party shall be obligated to
pay  the  fees  and  expenses  of  such  additional  counsel  or  counsels).  No
indemnifying party shall be liable to an indemnified party for any settlement of
any action,  proceeding or claim without the written consent of the indemnifying
party, which consent shall not be unreasonably withheld.

     7.4.  If  the   indemnification   required  by  this  Section  7  from  the
indemnifying  party is unavailable to an indemnified  party hereunder in respect
of any losses,  claims,  damages,  liabilities  or expenses  referred to in this
Section 7:

          (i)  The indemnifying  party, in lieu of indemnifying such indemnified
               party,  shall  contribute  to the amount  paid or payable by such
               indemnified  party as a result of such losses,  claims,  damages,
               liabilities  or expenses in such  proportion as is appropriate to
               reflect  the  relative  fault  of  the  indemnifying   party  and
               indemnified parties in connection with the actions which resulted
               in such losses, claims, damages, liabilities or expenses, as well
               as any other  relevant  equitable  considerations.  The  relative
               fault of such indemnifying party and indemnified parties shall be
               determined  by  reference  to,  among other  things,  whether any
               Violation  has been  committed  by,  or  relates  to  information
               supplied by, such indemnifying party or indemnified  parties, and
               the parties'  relative intent,  knowledge,  access to information
               and opportunity to correct or prevent such Violation.  The amount
               paid or  payable  by a party as a result of the  losses,  claims,
               damages,  liabilities  and  expenses  referred  to above shall be
               deemed  to  include,  subject  to the  limitations  set  forth in
               Section 7.1 and Section  7.2, any legal or other fees or expenses
               reasonably   incurred  by  such  party  in  connection  with  any
               investigation or proceeding.

          (ii) The parties  hereto agree that it would not be just and equitable
               if  contribution  pursuant to this Section 7.4 were determined by
               pro rata  allocation or by any other method of  allocation  which
               does not take into account the equitable  considerations referred
               to  in   Section   7.4(i).   No  Person   guilty  of   fraudulent
               misrepresentation  (within  the  meaning of Section  11(f) of the
               Securities Act) shall be entitled to contribution from any Person
               who was not guilty of such fraudulent misrepresentation.

     7.5. The  obligations of the Company and the Selling Holders of Registrable
Securities  under this Section 7 shall survive the completion of any offering of
Registrable   Securities  pursuant  to  a  registration   statement  under  this
Agreement.

Section 8. Transfer of Common Stock.  Notwithstanding anything in this Agreement
to the  contrary,  no Holder  may  Transfer  any  shares of Common  Stock to any
Person,  except as set forth in the last  paragraph  of this  Section 8,  unless
prior to any such Transfer such

                                                        16





Person has executed an  agreement  (in the form of Exhibit A hereto) to be bound
by the  provisions  of this  Agreement.  The Company  shall place the  following
legend on any certificate representing
shares of Common Stock held by a Holder:

                  "This security is subject to certain  restrictions on transfer
                  contained  in a  Stockholders  Agreement  dated as of June 20,
                  1996  between  MK  Rail   Corporation  and  Morrison   Knudsen
                  Corporation to which the holder of this  certificate is bound,
                  a copy of which  agreement is on file with the Secretary of MK
                  Rail Corporation."

     In order to enforce the foregoing  transfer  restriction,  without limiting
any other  rights or remedies  available to the  Company,  the Company  shall be
entitled to impose  stop-transfer  instructions  with respect to the Registrable
Securities of each Holder. The foregoing transfer  restrictions and legend shall
be removed in connection with any sale of Common Stock to the public pursuant to
an effective  registration statement or pursuant to Rule 144 or any similar rule
promulgated by the Commission  under the Securities Act, in each case so long as
the specific  identities of the Transferees are not known to the Holders selling
such shares prior to such sale.

Section 9. Corporate Governance Agreement.

     9.1. Until either the second  anniversary of the Distribution  Date (or, if
an effective Election Request, as defined in Section 9.6 hereof, is made and the
Stockholders  Meeting,  as defined in Section 9.7 hereof, is held prior thereto,
the date of the  Stockholders  Meeting),  each  Holder (i) shall vote all of its
shares of Registrable  Securities and any other voting securities of the Company
over which such Holder  exercises  voting power (or execute written  consents in
lieu of  meetings)  in favor  of the  election  of the  Company's  nominees  for
director and against the removal of any of the Company's directors (other than a
removal  for cause) at any meeting of  stockholders  or in any action by written
consent and (ii) shall take all other necessary or desirable actions within such
Holder's control (including, but not limited to, attendance at annual or special
stockholder  meetings  of the  Company  in person or by proxy  for  purposes  of
obtaining a quorum) to elect such  nominees  and to vote against such removal of
any of the  Company's  directors;  provided,  however,  that the total number of
directors on the Company's  Board of Directors shall not be fewer than seven and
a majority of such  directors  shall at all times consist of Outside  Directors.
Notwithstanding the foregoing, a Holder shall not be required to vote any voting
securities of the Company over which such Holder exercises voting power that are
not Registrable Securities (or execute written consents in lieu of meetings with
respect to such voting  securities) as otherwise required by this Section to the
extent the voting  securities  are held or controlled by the Holder as an agent,
custodian,  trustee or  executor,  in all cases for or on behalf of parties that
are not Holders of Registrable  Securities or their Affiliates or associates (as
defined in the rules  promulgated  under the Exchange Act), or are controlled by
the Holder as an investment  advisor for an investment  company registered under
the Investment Company Act of 1940, as amended,  or as an investment advisor for
any other person or group; provided,  that in all cases, the arrangement whereby
the Holder owns or controls the voting  securities has not been entered into for
the purpose of circumventing this Section; and further provided, in the case of

                                                        17





securities  controlled  by the Holder as an  investment  advisor for a person or
group that is not an investment  company registered under the Investment Company
Act, that no Holder or Holders has a direct economic  beneficial interest in the
person or group for which the Holder so acts as an investment advisor.

     9.2.  Without the prior  written  consent of the Company,  until either (i)
ninety (90) days prior to the scheduled date of the Stockholders  Meeting (if an
effective  Election  Request is made pursuant to Section 9.6 hereof) or (ii) the
second anniversary of the Distribution Date (if no effective Election Request is
made) (in either case, the  "Standstill  Termination  Date"),  no Holder may (i)
solicit  proxies  (as such terms are  defined in Rule 14a-1  under the  Exchange
Act),  whether or not such solicitation is exempt under 14a-2 under the Exchange
Act,  with  respect  to any  matter  from  holders  of any  shares  of common or
preferred  stock  of  the  Company,  or  any  securities   convertible  into  or
exchangeable for or exercisable (whether currently or upon the occurrence of any
contingency)   for  the  purchase  of  any  such  capital  stock,  or  make  any
communication   exempted   from  the   definition   of   solicitation   by  Rule
14a-1(l)(2)(iv)  under the Exchange Act, or (ii) initiate,  or induce or attempt
to induce  any other  Person or group (as  defined in  Section  13(d)(3)  of the
Exchange  Act) to  initiate,  any  stockholder  proposal  or  tender  offer  for
securities of the Company or any  subsidiary  thereof,  any change of control of
the  Company or any  subsidiary  thereof  or the  convening  of a  stockholders'
meeting of the Company or any  subsidiary  thereof;  or (iii)  otherwise seek or
propose  (or  request  permission  to  propose)  to  influence  or  control  the
management or policies of the Company or any subsidiary thereof.  Nothing herein
shall be deemed to apply to a Holder to the extent  the Holder is acting  solely
in its capacity as an agent,  custodian,  trustee or executor holding securities
that  are not  Registrable  Securities  for  persons  that  are not  Holders  or
Affiliates  of  Holders,  provided  that  the  Holder's  actions  are (a) at the
direction of a person or persons  that are not Holders  that are the  beneficial
owners of the  securities  so held by the Holder or (b) arise from the fiduciary
duties of the Holder  acting in such  capacity  ascertained  in good faith after
consulting with and based on advice of counsel as described in reasonable detail
in a written  notice given the Company at least thirty (30) days prior to taking
such action; and further provided that in all cases the arrangement  whereby the
Holder holds the  securities  has not been entered  into,  and the action by the
Holder has not been taken, for the purpose of circumventing this Section.

     9.3  Notwithstanding  anything  herein to the contrary,  the  provisions of
Sections  9.1 and 9.2 hereof  shall  terminate  at such time prior to the second
anniversary  of the  Distribution  Date,  if ever,  that all of the  Registrable
Securities  held by all  Holders  constitutes  less than 15% of the  outstanding
Common Stock.

     9.4 For so long as the  provisions  of Section  9.1 hereof are in force and
effect, the Company shall not amend the Rights Plan (i) to change the percentage
used in the  definition  of "Acquiring  Person"  therein so that it is less than
fifteen percent (15%) or (ii) in any other manner that would deprive the Holders
of the  Registrable  Securities  of the  intended  benefits  of the Rights  Plan
Amendment.

     9.5  At  the  first  annual  meeting  of the  stockholders  of the  Company
scheduled to occur at least  seventy-five  (75) days after the effective date of
this Agreement, the


                                                        18





Board of  Directors  of the Company  shall  propose to the  stockholders  of the
Company,  shall  recommend  approval  of, and shall  solicit  proxies  voting to
approve an amendment (the  "Certificate  Amendment") to the Amended and Restated
Certificate of  Incorporation of the Company,  as amended,  that, if adopted and
approved by the requisite vote of the  stockholders of the Company,  would amend
the first sentence of Section 3 of the Seventh  Article  thereof in its entirety
so it states as follows:

         Subject  to the  rights,  if  any,  of the  holders  of any  series  of
         Preferred  Stock  to elect  additional  directors  under  circumstances
         specified in a Preferred Stock Designation, newly created directorships
         resulting  from  any  increase  in the  number  of  Directors  and  any
         vacancies   on   the   Board   resulting   from   death,   resignation,
         disqualification,  removal or other cause, will be filled solely by the
         affirmative  vote of the majority of the  remaining  Directors  then in
         office,  even  though  less  than a quorum of the  Board,  or by a sole
         remaining Director;  provided,  however, that at the sole option of the
         Board,  effected by resolution  of the Board of Directors,  one or more
         such  vacancies  or newly  created  directorships  may be filled by the
         stockholders  at a meeting of the  stockholders  called by the Board of
         Directors.

If  the  Certificate  Amendment  is  effectively  adopted  and  approved  by the
stockholders  of the  Company,  the Board of  Directors  shall make a conforming
amendment to the first sentence of By- Law 11 of the By-Laws of the Company.

     9.6 The Holders  shall have the right at their  option to request  that the
Company hold a meeting of the  stockholders  as provided herein by delivery of a
written request (the "Election  Request") to the Secretary of the Company at its
principal executive offices not more than one hundred twenty (120) nor less than
ninety (90) days prior to the second anniversary of the Distribution Date, which
Election  Request shall identify each of the Holders making the Election Request
and shall include the information they would be required to give under By-Law 13
of the  By-Laws of the  Company as in effect on the date  hereof as if they were
making  nominations  for  positions  as  directors  at an annual  meeting of the
stockholders of the Company.  An Election Request shall be ineffective if it has
not been executed by Holders owning Registrable Securities constituting at least
fifteen percent (15%) of the  outstanding  Common Stock of the Company as of the
ninetieth (90th) day prior to the second  anniversary of the  Distribution  Date
and  shall  cease to be  effective  if prior to the  second  anniversary  of the
Distribution  Date the  Holders  executing  the  Election  Request  cease to own
Registrable  Securities  constituting  at  least  fifteen  percent  (15%) of the
outstanding  Common Stock of the Company.  If no effective  Election  Request is
delivered to the Secretary of the Company at the Company's  principal  executive
offices  not more than one hundred  twenty  (120) nor less than ninety (90) days
prior to said second  anniversary of the  Distribution  Date or if, prior to the
second  anniversary of the Distribution  Date, the Election Request ceases to be
effective, the Holders shall have no further rights under this Section.

     9.7 Provided the Certificate Amendment has been adopted and approved,  upon
receipt  of  an  effective  Election  Request,   unless  and  until  it  becomes
ineffective, the Board

                                                        19





of  Directors  of the Company  shall call a meeting of the  stockholders  of the
Company to be held as closely as  practicable  to the second  anniversary of the
Distribution Date (which meeting may be the annual meeting of stockholders) (the
"Stockholders  Meeting"), at which meeting the stockholders of the Company shall
be entitled to vote to fill  vacancies  and/or  newly-created  positions  on the
Board  of  Directors  of  the  Company,  which  vacancies  and/or  newly-created
positions,  when filled,  will  constitute a majority of the Company's  Board of
Directors.

     9.8 Nothing in Sections 9.6 or 9.7 hereof shall be deemed to amend,  modify
or waive any  provisions  of the  By-Laws  of the  Company,  including,  without
limitation,  those regarding the manner in which stockholders of the Company may
make  proposals or nominations  at meetings of such  stockholders,  all of which
shall  continue to be in full force and effect with respect to the  Stockholders
Meeting,  if it is held.  The  provisions of By-Law 13 of the Company's  By-Laws
shall be in full  force and  effect  with  respect  to all  nominations  to fill
vacancies at the Stockholders Meeting, if it is held.


Section 10. Amendment, Modification and Waivers; Further Assurances.

     10.1.  This  Agreement may be amended with the consent of the Company,  and
the Company may take any action  herein  prohibited,  or omit to perform any act
herein  required to be performed by it, only if the Company  shall have obtained
the  written  consent of Holders  owning  Registrable  Securities  possessing  a
majority  in number  of the  Registrable  Securities  then  outstanding  to such
amendment, action or omission to act.

     10.2. No waiver of any terms or conditions of this Agreement  shall operate
as a waiver of any other breach of such terms and  conditions  or any other term
or condition, nor shall any failure to enforce any provision hereof operate as a
waiver of such  provision or of any other  provision  hereof.  No written waiver
hereunder, unless it by its own terms explicitly provides to the contrary, shall
be construed to effect a continuing waiver of the provisions being waived and no
such waiver in any instance  shall  constitute a waiver in any other instance or
for any other  purpose or impair the right of the party against whom such waiver
is claimed in all other  instances  or for all other  purposes  to require  full
compliance with such provision.

     10.3. Each of the parties hereto shall execute all such further instruments
and  documents  and take all such  further  action as any other party hereto may
reasonably  require  in order to  effectuate  the  terms  and  purposes  of this
Agreement.

Section 11. Assignment; Benefit. This Agreement and all of the provisions hereof
shall be binding  upon and shall inure to the benefit of the parties  hereto and
their  respective  heirs,  permitted  assigns,   executors,   administrators  or
successors;  provided, however, that except as specifically provided herein with
respect  to certain  matters,  neither  this  Agreement  nor any of the  rights,
interests or obligations hereunder shall be assigned or delegated by the Company
without  the prior  written  consent of Holders  owning  Registrable  Securities
possessing a majority in number of the Registrable  Securities then  outstanding
on the date as of which such delegation or

                                                        20





assignment is to become effective. A Holder may Transfer its rights hereunder to
a successor in interest to the  Registrable  Securities  owned by such  assignor
only as permitted by Section 8.

Section 12. Miscellaneous.

     12.1.  Governing Law. THIS AGREEMENT  SHALL BE GOVERNED BY AND CONSTRUED IN
ACCORDANCE WITH THE LAWS OF THE STATE OF DELAWARE,  WITHOUT GIVING REGARD TO THE
CONFLICT OF LAWS PRINCIPLES THEREOF.

     12.2.  Notices.  All notices and requests  given pursuant to this Agreement
shall  be in  writing  and  shall  be made by  hand-delivery,  first-class  mail
(registered or certified,  return  receipt  requested),  confirmed  facsimile or
overnight air courier guaranteeing next business day:

                  (a)               If to MK Rail, to:

                                    MK Rail Corporation
                                    1200 Reedsdale Street
                                    Pittsburgh, PA  15233
                                    Attention:  Chairman

                                    With a copy to:

                                    Michael A. Weiss, Esquire
                                    Doepken Keevican & Weiss
                                    37th Floor, USX Tower
                                    600 Grant Street
                                    Pittsburgh, PA  15219

                  (b)               If to MKO or MKC, to:

                                    Morrison Knudsen Corporation
                                    720 Park Boulevard
                                    Boise, Idaho
                                    Attention:  President

                                    With a copy to:

                                    Robert Dean Avery, Esq.
                                    Jones, Day, Reavis & Pogue
                                    Suite 4600
                                    555 West Fifth Street
                                    Los Angeles, CA  90013-1025


                                                        21





                  (c)               and if to any other Holder, to:

                                    the  address  set  forth  in  the   relevant
                                    agreement  in the form of  Exhibit A whereby
                                    such party became bound by the provisions of
                                    this Agreement.

Except as otherwise provided in this Agreement, the date of each such notice and
request  shall be  deemed to be,  and the date on which  each  such  notice  and
request  shall be deemed given shall be: at the time  delivered,  if  personally
delivered or mailed; when receipt is acknowledged, if sent by facsimile; and the
next business day after timely delivery to the courier, if sent by overnight air
courier guaranteeing next business day delivery.

     12.3. Entire Agreement;  Integration.  This Agreement  supersedes all prior
agreements  between  or among any of the  parties  hereto  with  respect  to the
subject  matter  contained  herein,  and  this  agreement  embodies  the  entire
understanding among the parties relating to such subject matter.

     12.4.  Injunctive Relief.  Each of the parties hereto  acknowledges that in
the  event  of a  breach  by any of  them  of any  material  provision  of  this
Agreement, the aggrieved party may be without an adequate remedy at law. Each of
the  parties  therefore  agrees  that in the event of such a breach  hereof  the
aggrieved party may elect to institute and prosecute proceedings in any court of
competent  jurisdiction  to  enforce  specific  performance  or  to  enjoin  the
continuing breach hereof. By seeking or obtaining any such relief, the aggrieved
party shall not be precluded from seeking or obtaining any other relief to which
it may be entitled.

     12.5.  Section Headings.  Section headings are for convenience of reference
only and shall not affect the meaning of any provision of this Agreement.

     12.6.  Counterparts.  This  Agreement  may be  executed  in any  number  of
counterparts,  each of  which  shall  be an  original,  and all of  which  shall
together  constitute one and the same instrument.  All signatures need not be on
the same counterpart.

     12.7.  Filing. A copy of this Agreement and of all amendments thereto shall
be filed at the principal  executive office of the Company with the Secretary of
the Company.

     12.8 Termination. This Agreement may be terminated at any time by a written
instrument signed by the parties hereto.  Unless sooner terminated in accordance
with the immediately  preceding  sentence,  the parties'  obligations under this
Agreement (other than Section 7 hereof) shall terminate in their entirety on the
fifth anniversary of the Distribution Date.

     12.9  Attorneys'  Fees. In any action or proceeding  brought to enforce any
provision of this Agreement,  the successful  party shall be entitled to recover
reasonable attorneys'

                                                        22





fees  (including  any fees  incurred in any appeal) in addition to its costs and
expenses and any other available remedy.

     12.10 No Third Party Beneficiaries.  Nothing herein expressed or implied is
intended  to confer  upon any  person,  other than the  parties  hereto or their
respective permitted assigns,  successors,  heirs and legal  representatives and
other than parties  entitled to  indemnification  uinder  Section 7 hereof,  any
rights,  remedies,  obligations  or  liabilities  under  or by  reason  of  this
Agreement.


                                                        23






     IN WITNESS  WHEREOF,  this  Agreement has been duly executed by the parties
hereto as of the date first written above.


                                                MK RAIL CORPORATION



                                                By:_____________________
                                                John C. Pope, Chairman




                                                 MORRISON KNUDSEN CORPORATION



                                                 By:______________________

                                                 Name:
                                                 Title:










                                                                       EXHIBIT A




                              AGREEMENT TO BE BOUND
                          BY THE STOCKHOLDERS AGREEMENT


                  The  undersigned,  being  the  proposed  transferee  of ______
shares of the common stock, $.01 par value per share (the "Common Stock"), of MK
Rail Corporation,  a Delaware corporation (the "Company"), as a condition to the
receipt of such  Common  Stock,  acknowledges  that  matters  pertaining  to the
registration,  voting and  transfer  of such  Common  Stock is  governed  by the
Stockholders Agreement dated as of __________,  1996 (the "Agreement") initially
among the Company and Morrison Knudsen Corporation, an Ohio corporation, and the
undersigned hereby (1) acknowledges receipt of a copy of the Agreement,  and (2)
agrees to be bound as a Holder by the  terms of the  Agreement,  as the same has
been or may be amended from time to time.

                  Agreed to this __ day of ______________, ____________.




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*Include address for notices.