Exhibit 4.5


                   AMENDMENT NO. 1 TO STOCKHOLDERS' AGREEMENT

     This Amendment No. 1, dated as of February 28, 2001 (this "Amendment"), to
the Stockholders' Agreement (the "Original Agreement"), dated as of March 9,
2000, by and among Caravelle Investment Fund, L.L.C., a Delaware limited
liability company ("Caravelle"), CIBC WMC Inc., a Delaware corporation
("CIBCWMC"), Albion Alliance Mezzanine Fund, L.P., a Delaware limited
partnership ("Albion"), Albion Alliance Mezzanine Fund II, L.P., a Delaware
limited partnership ("Albion II" and, together with Caravelle, CIBCWMC and
Albion I, the "Preferred Investors" and, in their capacity as holders of shares
of Common Stock (and together with any of their Affiliates or Associated
Entities or Managed Funds (including Trimaran Fund II, L.L.C., the Trimaran
Co-Investors and TIP (as defined in the second and first recitals hereto)) that
have or may become transferees of any Common Stock held by them), the "Preferred
Investor Common Stockholders"), Transportation Technologies Industries, Inc., a
Delaware corporation and the surviving corporation in the Merger (the
"Company"), and the persons listed on Exhibit A attached hereto who are
signatories to such agreement (the "Individual Investors" and, together with the
Preferred Investor Common Stockholders, the "Stockholders"), is entered into by
and among the Preferred Investor Common Stockholders (other than CIBCWMC,
Trimaran and the Trimaran Co-Investors) and the Individual Investors. Unless
otherwise defined herein, capitalized terms used herein shall have the meanings
ascribed thereto in the Original Agreement.

                                    RECITALS

     WHEREAS, Transportation Investment Partners L.L.C. ("TIP"), Caravelle and
certain of the Individual Investors have purchased an aggregate of 465,116
shares of Common Stock, warrants (the "Warrants") to purchase an aggregate of
100,000 shares of Common Stock, contingent warrants (the "New Equity Contingent
Warrants") to purchase an aggregate of 465,116 shares of Common Stock, a
conversion option (the "Conversion Option") pursuant to which, upon exercise
thereof, the Company has agreed to issue to such Persons up to an aggregate of
697,674 shares of Common Stock and contingent warrants (the "Conversion
Contingent Warrants" and, together with the New Equity Contingent Warrants, the
"Contingent Warrants") to purchase up to an aggregate of 697,674 shares of
Common Stock;

     WHEREAS, pursuant to the Assignment and Assumption Agreement, dated as of
June 30, 2000, Caravelle has assigned a portion of the Common Stock and
Preferred Stock acquired thereby to Trimaran Fund II, L.L.C. ("Trimaran"), and
the other Trimaran Co-Investors (as defined in the aforesaid Assignment and
Assumption Agreement), CIBC WMC, Inc. ("CIBCWMC"), pursuant to an Assignment and
Assumption Agreement, dated as of June 30, 2000, has assigned all the Common
Stock and Preferred Stock acquired thereby to Trimaran and the Trimaran
Co-Investors and Trimaran and the Trimaran Co-Investors, pursuant to an
Assignment and Assumption Agreement, dated as of February 27, 2001, have
assigned all the Common Stock and Preferred Stock acquired by Trimaran and the
Trimaran Co-Investors pursuant to the aforesaid assignment and assumption
agreement to TIP;

     WHEREAS, pursuant to the aforesaid assignment and assumption agreements:




          (a) CIBCWMC is no longer a party to the Original Agreement nor to the
     other Ancillary Agreements (as defined in the aforesaid assignment and
     assumption agreements) and has assigned its rights under the Ancillary
     Agreements to Trimaran and the Trimaran Co-Investors and they have assumed
     all CIBCWMC's liabilities thereunder; and

          (b) Caravelle has assigned certain of its rights under the Ancillary
     Agreements to Trimaran and the Trimaran Co-Investors and they have assumed
     certain of Caravelle's liabilities thereunder; and

          (c) Trimaran and the Trimaran Co-Investors are no longer a party to
     the Original Agreement nor to the other Ancillary Agreements (as defined in
     the aforesaid assignment and assumption agreements) and have assigned their
     rights under the Ancillary Agreements to TIP and TIP has assumed all
     Trimaran's and the Trimaran Co-Investor's liabilities thereunder; and

          (d) by virtue of the aforesaid and Section 5(i) of the Original
     Agreement, TIP became party to the Original Agreement;

     WHEREAS, the parties hereto wish to amend the Original Agreement to
provide, among other things, for the election of new directors.

                                   AGREEMENTS

     NOW, THEREFORE, in consideration of the mutual covenants and obligations
set forth in this Amendment, the receipt and sufficiency of which are
acknowledged by each of the parties hereto, effective as of the date hereof
(except as provided herein), the parties hereto, intending to be legally bound,
hereby agree as follows:

     1. Representations and Warranties. Each party hereto represents and
warrants that (a) this Amendment has been duly authorized, executed and
delivered by such party and constitutes the valid and binding obligation of such
party, enforceable against such party in accordance with its terms, and (b) such
party has not granted and is not a party to any proxy, voting trust or other
agreement which conflicts with or violates any provision of the Original
Agreement, as amended by this Amendment. No party to this Amendment shall grant
any proxy or become party to any voting trust or other agreement which conflicts
with or violates any provision of the Original Agreement, as amended by this
Amendment.

     2. Amendments to Original Agreement.

          (a) The number of directors specified in Section 2(a)(i) of the
     Original Agreement is hereby changed to nine. The Stockholders shall take
     all action to cause the Company's Certificate of Incorporation and By-Laws
     so to provide as of the date hereof.

          (b) The number of directors specified in Section 2(a)(ii) of the
     Original Agreement is hereby changed to five. TIP, and, at its election,
     any of its Affiliates or Associated Entities that may become transferees of
     Common Stock, shall designate four of such directors and Caravelle, and, at
     its election, any of its Affiliates or Associated Enti-



                                      -2-


     ties that may become transferees of Common Stock, shall designate the
     remaining such director. In addition to the directors already designated
     thereby, TIP hereby designates Steven Flyer and Anthony Pui to serve as
     directors.

          (c) Section 2(a)(vi), and the last sentence of Section 2(b), of the
     Original Agreement (and all references thereto in such agreement) are
     hereby deleted.

          (d) The amount in Section 3(d)(ii) of the Original Agreement is hereby
     changed to $15.0 million and the amount in Section 3(d)(iii) thereof is
     hereby changed to $20.0 million.

          (e) Section 5(i)(ii) of the Original Agreement is hereby amended by
     inserting immediately after the word, "above", therein: "or the transfers
     described in the recitals to Amendment No. 1 to this Agreement, dated as of
     February 28, 2001".

          (f) Sections 8(a), (b) and (c) of the Original Agreement are hereby
     restated in their entirety as follows:

               (a) Until such time as a Qualified Public Offering shall have
          been consummated (subject to the voting rights of directors elected by
          the holders of Preferred Stock in accordance with the terms of the
          Certificate of Designation), if Preferred Investor Common Stockholders
          (such holders being the "Initiators") holding at least 75% of the
          fully-diluted shares of Common Stock held by all Preferred Investor
          Common Stockholders, assuming full conversion of the Preferred Stock,
          propose a sale, merger or other Transfer involving all or
          substantially all of the shares or assets of the Company on an arm's
          length basis to a third party or an affiliated group of third parties
          who is not (i) a Stockholder or (ii) an Affiliate of a Stockholder,
          then the remaining Stockholders and their Permitted Transferees (the
          "Remaining Stockholders") shall (subject to the voting rights of
          directors elected by the holders of Preferred Stock in accordance with
          the terms of the Certificate of Designation) consent to and raise no
          objection with respect to (and will not exercise statutory appraisal
          rights in connection with) such transaction and, if such transaction
          is structured as a sale of shares (including a sale structured as a
          merger, whether a forward, reverse or other merger), the Remaining
          Stockholders will, at the option of the Initiators (subject to the
          voting rights of the directors elected by the holders of Preferred
          Stock in accordance with the terms of the Certificate of Designation),
          agree to sell their shares on the terms and conditions approved by the
          Board and the Initiators; provided, however, that (x) subject to the
          first proviso to Section 8(c), any options as to the type of
          consideration offered to any Initiator must be offered to the
          Remaining Stockholders, (y) the consideration offered for any proposed
          Transfer must be at least 80% cash or marketable securities and (iii)
          there shall be no adverse tax consequences which relate or impact only
          the Remaining Stockholders (as distinguished from all Stockholders)
          arising from such transaction.

               (b) To exercise the drag-along rights provided in this Section 8,
          the Company shall first give to the Remaining Stockholders a written
          notice (a



                                      -3-


          "Drag-Along Notice") containing (i) the name and address of the
          proposed transferee and (ii) the proposed purchase price, terms of
          payment and other material terms and conditions of the proposed
          transferee's offer. The Remaining Stockholders shall, at the option of
          the Initiators, thereafter be obligated, subject to the terms and
          conditions of this Section 8, to sell to the proposed transferee,
          simultaneously with the other Stockholders' sales, its shares.

               (c) At the closing of any Transfer of shares pursuant to this
          Section 8, the Remaining Stockholders shall enter into agreements with
          the purchaser of the shares containing terms substantially similar to
          the terms on which the Initiators are Transferring their shares;
          provided, however, that the consideration to be received in respect of
          the Common Stock and Preferred Stock (i) in the case of a merger or
          consolidation of the Company or a transfer of shares, shall be
          determined on the basis of the Company's having distributed the
          aggregate proceeds to be received by all holders of its capital stock
          in such transaction in a liquidation thereof and (ii) in the case of a
          sale of assets of the Company, shall be determined on the basis of the
          Company having discharged all its remaining liabilities (or having
          duly created reserves therefor) and then liquidating; and provided
          further that (x) all claims in respect of breaches of representation
          and warranties by the Stockholders or the Company (or claims for
          indemnification in respect thereof) not described in the immediately
          succeeding clause (y)(A) of this proviso (as if such clause applied to
          the Initiators as well) shall first be paid by holders of Common Stock
          (based on the number of shares of Common Stock Transferred thereby in
          such transaction), and, to the extent such claims exceed such
          aggregate consideration, by the holders of the Preferred Stock (based
          on the number of shares of Preferred Stock Transferred thereby in such
          transaction); and (y) notwithstanding anything contained in this
          Agreement to the contrary, neither the Remaining Stockholders nor any
          of their respective Permitted Transferees shall be required to (A)
          make any representations or warranties, or provide indemnification, to
          any person (other than representations and related indemnification
          regarding the due authorization to enter and to perform the agreement
          of sale, the validity and enforceability of the agreement of Transfer,
          good title to the shares Transferred, regarding the absence of liens
          or encumbrances on the shares so Transferred and as provided in the
          immediately succeeding clause (B) of this proviso), and (B) each of
          the Remaining Stockholders' liability for breach of any
          representations and warranties in respect of the Company will be
          several and not joint, will be proportionate to the percentage of the
          shares it Transfers, and will be limited to any proceeds received or
          receivable by it arising from such Transfer.

          (g) (i) Section 17(a) of the Original Agreement (and all references
     thereto in such agreement) are hereby deleted. Each Individual Investor
     hereby agrees to such amendments, as may be reasonably requested by the
     Company, to his employment agreement so as to reflect such deletion.

          (ii) The first and second sentences of Section 17(b)(ii) of the
     Original Agreement are hereby replaced with the following:



                                      -4-


          "If the call right provided for in Section 17(b)(i) is not fully
          exercised during the First Call Period, the Stockholders (other than
          the terminated Individual Investor and any Affiliated Transferee)
          shall have the right and option for 30 days after the First Call
          Period (the "Second Call Period") to purchase any or all shares then
          held by the terminated Individual Investor and any Affiliated
          Transferee not purchased pursuant to Section 17(b)(i), and the
          Individual Investor (and any Affiliated Transferee) shall be required
          to offer to such Stockholders any or all such shares at a price per
          share equal to the applicable purchase price determined to pursuant to
          Section 17(b)(iv). Each Stockholder having an option to acquire shares
          pursuant to the immediately preceding sentence may elect to acquire up
          to all the shares so offered. If the aggregate number of shares
          elected to be purchased by the Stockholders exceeds the number of
          shares so offered, each Stockholder may first purchase up to his pro
          rata portion of the shares so offered (which shall be the percentage
          of the shares so offered that is equal to the percentage of
          fully-diluted shares held by such Stockholder divided by the
          percentage of fully-diluted shares held by all Stockholders electing
          to purchase portions of the shares so offered), and the balance of any
          shares to be so purchased shall be allocated among Stockholders who
          elected to purchase more than such pro rata share in the proportion in
          which such pro rata share of each such Stockholder bears to the
          others."

          (iii) (x) The phrase, "Preferred Investor Common", in the last
     sentence of Section 17(b)(ii) of the Original Agreement is hereby deleted,
     (y) the reference in such sentence to "the preceding sentence" is hereby
     changed to "the first sentence" and (z) the reference in such sentence and
     in Section 17(b)(iii) of the Original Agreement to "Third Call Period" and
     "Fourth Call Period" is hereby changed to "Second Call Period" and "Third
     Call Period", respectively.

          (iv) (x) The second sentence of Section 17(b)(iii) of the Original
     Agreement (and all references thereto in such agreement) are hereby
     deleted; and (y) the phrase, "Preferred Investor Common", in the last
     sentence of Section 17(b)(iii) of the Original Agreement is hereby deleted
     in each instance.

          (h) The following is hereby added as a new Section 3A to the Original
     Agreement:

          "Without the affirmative vote (or written consent) of (A) Individual
          Investors (and their Permitted Transferees) holding a majority of
          shares of Common Stock held by all Individual investors (and their
          Permitted Transferee) or (B) all members of the Board, the Company
          shall not:

               (a) (nor shall it permit any of its Subsidiaries to) engage in
          any transaction with any Affiliate of the Company that is a Preferred
          Investor Common Stockholder (or an Affiliate thereof) (i) that is not
          fair from a financial point of view to the Company and its
          Subsidiaries or (ii) which, either alone or together with a series of
          related transactions involving such Persons, involves amounts having a
          fair market value in excess of $5 mil-



                                      -5-


          lion without having obtained an opinion of an Independent Financial
          Expert (as defined in the Contingent Warrant Agreement) that the terms
          of such transaction are fair to the Company and its Subsidiaries from
          a financial point of view;

               (b) amend its Certificate of Incorporation or By-Laws in a manner
          that is designed to affect an Individual Investor in a materially
          different manner from the manner in which such amendment affects other
          holders of Common Stock who are not Individual Investors or their
          Permitted Transferees; provided that this Section 3A shall not apply
          to any transaction or amendment made in connection with a transaction
          subject to Section 8."

          (i) The following is hereby added as new Section 3B to the Original
     Agreement:

               (a) "(a) Without the prior consent of the Company (which consent
          may be given or withheld for any reason, whether reasonable or
          unreasonable), no Individual Investor, while employed by the Company
          or any Subsidiary of the Company, shall (nor shall he permit any of
          his Related Persons or any Affiliates of him or of such Related
          Persons to) enter into any agreement or understanding with respect to
          the acquisition or other purchase of any direct or indirect ownership
          interest (other than less than 1% of a class of publicly traded
          securities) in any business that is competitive with the Company or
          any of its Subsidiaries (i) until 20 business days after the date on
          which the Company and the Board received the written request
          contemplated by Section 3B(b) in respect of any such acquisition or
          purchase; and (ii) at any time after the Board rejects such request
          (as evidenced by a notice given to the Individual Investor making such
          request (as contemplated by Section 3B(b)) from the Company to such
          effect no later than the end of such 20 business day period.

               (b) (b) Any Individual Investor may bring to the attention of the
          Board any transaction described in Section 3B(a) of the immediately
          preceding sentence. If the Board elects not to pursue such
          transaction, such Individual Investor may request in writing that the
          Board permit him to pursue the same, in which event the Board shall
          consider such request; provided that the Board shall be under no
          obligation to grant such request and may deny the same for any reason,
          whether reasonable or unreasonable."

          (j) The following proviso is hereby added to the definition of "fully
     diluted" in Section 20 of the Original Agreement:

     "provided that Contingent Warrants shall only be included to the extent
they are exercisable at the time of determination".

          (k) The following definitions are hereby added to Section 20 of the
     Original Agreement:



                                      -6-


     ""Contingent Warrants" shall have the meaning ascribed to such term in the
second recital to Amendment No. 1 to this Agreement, dated as of February 28,
2001.

     "Conversion Contingent Warrants" shall have the meaning ascribed to such
term in the second recital to Amendment No. 1 to this Agreement, dated as of
February 28, 2001.

     "Initiators" shall have the meaning ascribed to such term in Section 8(a)
of this Agreement, as amended by Amendment No. 1 to this Agreement, dated as of
February 28, 2001.

     "New Equity Contingent Warrants" shall have the meaning ascribed to such
term in the first recital to Amendment No. 1 to this Agreement, dated as of
February 28, 2001.

     "Santomero" shall have the meaning ascribed to such term in the second
recital to Amendment No. 1 to this Agreement, dated as of February 28, 2001.

     "TIP" shall have the meaning ascribed to such term in the first recital to
Amendment No. 1 to this Agreement, dated as of February 28, 2001.

     "Warrants" shall have the meaning ascribed to such term in the first
recital to Amendment No. 1 to this Agreement, dated as of February 28, 2001."

          (l) The following is hereby added to the end of Section 21 (a) of the
     Original Agreement:

          "Notwithstanding the foregoing, the Company shall enter into such
          amendments to this Agreement such that each Person acquiring shares of
          Common Stock upon exercise of the Conversion Option, the Warrants or
          the Contingent Warrants shall become a party to this Agreement and
          that such Person shall, for purposes of this Agreement (in respect of
          such shares), be (x) a Preferred Investor Common Stockholder, if the
          initial holder of the portion of the Conversion Option or the initial
          holder of the Warrants or Contingent Warrants, as the case may be, in
          respect of the exercise of which such shares were acquired by such
          Person was a Preferred Investor Common Stockholder, or (y) an
          Individual Investor, if the initial holder of the portion of the
          Conversion Option or the initial holder of the Warrants or Contingent
          Warrants, as the case may be, in respect of the exercise of which such
          shares were acquired by such Person was an Individual Investor."

     3. (a) Each Individual Investor agrees to such amendments, as may be
reasonably requested by the Company, to his employment agreement so as to
provide that this Amendment and the transactions contemplated hereby do not
constitute a Change of Control.

     (b) The parties hereto hereby agree to use their respective reasonable
commercial efforts to make such amendments to all other agreements and
documentation in respect of the Company to effectuate the amendments to the
Original Agreement herein contemplated.



                                      -7-


     4. At the Closing Time (as defined in the Purchase Agreement, dated as of
February 20, 2001, by and among the Company and the purchasers named therein),
the Company, Thomas M. Begel, Timothy A. Masek, Kenneth M. Tallering, John
Wilkinson and Andrew M. Weller shall execute and deliver to each other a letter
substantially in the form attached as Exhibit A hereto.

     5. Except as provided in Section 2 of this Amendment, the Original
Agreement shall remain in full force and effect.

     IN WITNESS WHEREOF, the parties hereto have executed this Amendment on the
day and year first above written.


                          PREFERRED INVESTORS

                          CARAVELLE INVESTMENT FUND L L C


                          By:    Caravelle Advisors, L.L.C.,
                                 its investment manager and attorney-in-fact




                          By:    /s/ Jason Block
                                 ---------------------------------------------
                                 Name:
                                 Title:



                          TRANSPORTATION INVESTMENT PARTNERS L.L.C.


                          By:    /s/ Dean C. Kehler
                                 -------------------------------------------
                                 Name:
                                 Title:



                          ALBION-ALLIANCE MEZZANINE FUND. L P

                          By:      Albion Alliance LLC, its general partner


                          By:    /s/ Alastair Tedford
                                 -------------------------------------------
                                 Name:
                                 Title:






                                      -8-


                          ALBION-ALLIANCE MEZZANINE FUND II L.P


                          By-    AA MEZZ II GP, LLC, its general partner




                          By:    Albion Alliance LLC, its sole member




                          By:    /s/ Alastair Tedford
                                 -------------------------------------------
                                 Name:
                                 Title:






                                      -9-





                          INDIVIDUAL INVESTORS


                          /s/ Thomas M. Begel
                          ---------------------------------
                          Thomas M. Begel




                          /s/ Timothy A. Masek
                          ---------------------------------
                          Timothy A. Masek




                          /s/ Kenneth M. Tallering
                          ---------------------------------
                          Kenneth M. Tallering




                          /s/ Andrew M. Weller
                          ---------------------------------
                          Andrew M. Weller




                          /s/ James D. Cirar
                          ---------------------------------
                          James D. Cirar




                          /s/ Camillo M. Santomero III
                          ---------------------------------
                          Camillo M. Santomero III




                          /s/ John Wilkinson
                          ---------------------------------
                          John Wilkinson




                          /s/ Robert L. Jackson
                          ---------------------------------
                          Robert L. Jackson




                          /s/ Donald C. Mueller
                          ---------------------------------
                          Donald C. Mueller




                          /s/ Lee Swafford
                          ---------------------------------
                          Lee Swafford




                          /s/ Kelly Bodway
                          ---------------------------------
                          Kelly Bodway




                          /s/ David W. Riesmeyer
                          ---------------------------------
                          David W. Riesmeyer



                                      -10-



                          /s/ Brent Williams
                          ---------------------------------
                          Brent Williams




                          /s/ Jeffrey Elmer
                          ---------------------------------
                          Jeffrey Elmer




                          /s/ Adam Gottlieb
                          ---------------------------------
                          Adam Gottlieb






                                      -11-





                          C+H ENTERPRISES GROUP, INC.


                          By:    /s/ Fred Culbreath
                                 -----------------------------------------
                                 Name: Fred Culbreath
                                 Title: Partner






                                      -12-





                          TRANSPORTATION TECHNOLOGIES INDUSTRIES, INC.


                          By:    /s/ Donald C. Mueller
                                 -----------------------------------------
                                 Name: Donald C. Mueller
                                 Title: Chief Financial Officer,
                                        Treasurer and Vice President









                                      -13-