Exhibit 10.6 Security Agreement.

                  FIRST AMENDED AND RESTATED SECURITY AGREEMENT
Borrower/Debtor:                                        Lender/Secured Party:

Central Freight Lines, Inc.,                            SunTrust Bank
a Texas Corporation                                     201 Fourth Avenue North
5601 West Waco Drive                                    Nashville, TN 37219
Waco, Texas 76710

     THIS FIRST  AMENDED AND  RESTATED  SECURITY  AGREEMENT is entered into this
28th day of July,  2004, by and between  Central  Freight  Lines,  Inc., a Texas
corporation  with its principal  offices  located at the address set forth above
("Borrower"),  and  SunTrust  Bank, a Georgia  state  banking  corporation  with
offices  located at the  address  set forth above  ("Lender").  Intending  to be
legally  bound,  Borrower and Lender  agree that the  Security  Agreement by and
between Borrower and Lender, dated April 30, 2002 is amended and restated in its
entirety as follows:

     1.Security  Interest and  Indebtedness.  Borrower  hereby  grants  Lender a
security  interest  in the  property  described  on  Exhibit A  hereto,  and all
proceeds  thereof,  and  all  substitutions   (including  additional  collateral
described  in Section  4),  replacements,  attachments  and  accessions  thereto
(collectively,  the  "Collateral"),  to secure prompt and full  performance  and
payment of (a) all amounts due under that  certain  First  Amended and  Restated
Revolving Credit Loan Agreement of even date herewith,  executed by Borrower and
Lender (as amended  and/or  restated from time to time,  the "Loan  Agreement"),
that certain First Amended and Restated  Revolving  Credit Note in the principal
amount of up to Thirty  Million  Dollars  ($30,000,000),  of even date herewith,
issued by Borrower to the order of Lender (as amended and/or  restated from time
to time,  the "Note"),  and all amounts that Borrower may at any time owe Lender
in connection with the Loan Agreement or the Note or any other Loan Document (as
defined in the Loan Agreement); (b) all amounts due under any Hedging Agreement;
(c) all amounts under any LC Documents or any LC  Disbursement;  (d) all amounts
that  Lender  may  now or  hereafter  pay or  advance  at any  time  for  taxes,
insurance,  repairs,  maintenance  or  other  protection  with  respect  to  the
Collateral; and (e) all costs and expenses that Lender may incur in enforcing or
protecting its rights with respect to the Collateral or the indebtedness secured
by the Collateral, including attorneys' fees (collectively, the "Indebtedness").

     2. Representations and Warranties.  Borrower hereby represents and warrants
to Lender,  as of the date that any  Collateral is pledged to Lender by Borrower
and  thereafter,  that (a)  Borrower is the sole,  true and lawful  owner of the
Collateral;  (b)  Borrower  has a good  unrestricted  right to grant a  security
interest in the Collateral;  (c) there are no advances,  claims, liens, security
interests or  encumbrances  against the Collateral  except as granted to Lender;
and (d) all descriptions of Collateral provided to Lender are true and accurate.

     3. Borrower's General Covenants. Borrower hereby covenants and agrees that,
until the Indebtedness has been paid in full, unless Borrower receives the prior
written consent of Lender:  (a) Borrower shall keep the Collateral free from any
other lien,  security interest or encumbrance,  shall maintain the Collateral in
good order and repair,  shall use the  Collateral in  accordance  with all laws,


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regulations and orders, and shall not sell,  transfer,  or dispose of any of the
Collateral;   (b)  Borrower  shall  promptly  advise  Lender  of  any  event  or
circumstance  materially and adversely  affecting the  Collateral;  (c) Borrower
shall pay when due all taxes and similar obligations that might result in a lien
on the Collateral if not paid.  Borrower agrees to execute additional  documents
and take such other  actions (at its expense) as Lender may  reasonably  request
from time to time to implement or evidence the terms of this Agreement.

     4.  Limitation on Revolving  Loans. At all times the book value of tractors
constituting  Collateral hereunder shall equal or exceed 200% of the outstanding
Revolving Loans under the Loan Agreement.  Borrower shall not request an Advance
constituting  a Revolving  Loan until and unless such  Collateral in the form of
tractors has been delivered to Lender.

     5. Cash Collateral for Letters of Credit.  Concurrently  with the execution
of this  Agreement,  the Borrower shall deposit with the Lender  sufficient cash
equal to the LC Exposure under the Loan Agreement and shall thereafter  maintain
cash in a deposit  account with Lender in amounts  equal to or greater than such
LC  Exposure  (the  "Cash  Collateral").  Such  depository  account(s)  shall be
maintained  with Lender,  in the name of the  Borrower  but under the  exclusive
dominion and control of Lender as collateral for the payment and  performance of
the obligations of the Borrower under the Loan Agreement. If no Event of Default
exists under the Loan  Agreement,  any interest earned on the investment of such
deposits,  shall be paid to Borrower on the first  business day of each calendar
quarter.  Moneys in such  deposit  accounts  shall be  applied  by the Lender to
reimburse itself for any LC Disbursements and upon the occurrence of an Event of
Default,  shall  be  applied  to  the  satisfaction  of any  Obligations  of the
Borrower, under the Loan Agreement.

     6. Sale and  Replacement  of  Collateral.  If an Event of Default  does not
exist, the Borrower may sell or otherwise  dispose of portions of the Collateral
(other than Cash  Collateral)  in the  ordinary  course of its business for fair
market  value;  provided,  that once  Borrower  has sold or disposed of tractors
included in the Collateral,  Borrower shall concurrently replace such Collateral
(and deliver titles therefor) with book values sufficient to comply with Section
4 hereof.  The  additional  tractors  shall  become part of the  Collateral  and
subject to the terms and provisions of this Agreement.

     7.  Perfection  and  Protection of  Collateral.  Borrower shall ensure that
Lender's  security  interest in the  Collateral  is and will remain a perfected,
first priority security interest.  Borrower shall (at its sole expense) execute,
obtain,  deliver and (if  applicable)  file or record all financing  statements,
title applications and other title documents,  and take all other actions,  that
Lender may deem reasonably necessary or advisable to perfect or protect Lender's
security  interest in the  Collateral  against the  interests of third  parties.
Borrower  hereby  irrevocably  appoints  Lender as its  attorney-in-fact,  which
appointment is coupled with an interest, to take any action that Lender may deem
necessary to perfect and/or  continue the  perfection of its security  interests
and to protect the Collateral,  including  without  limitation the filing of any
financing  statements  without  Borrower's  signature as permitted by applicable
law.  Borrower  agrees to pay, on demand,  all costs,  taxes and fees payable in
connection  with any such filings or  recordings.  Borrower shall give Lender at
least thirty (30) days prior written notice before retitling any Collateral from
its  present  jurisdiction,  and in each  case  shall  (at  Borrower's  expense)
promptly  take all steps  necessary or advisable  to preserve  continuously  the
perfection and priority of Lender's security interests in the Collateral.

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     8.  Inspection.   Borrower  shall  maintain   adequate  books  and  records
pertaining to the Collateral and shall permit Lender to visit and inspect any of
the Collateral,  to examine Borrower's books of record and accounts with respect
to the  Collateral,  all at such  reasonable  times and as often as  Lender  may
reasonably desire.

     9. Insurance.  Borrower shall maintain casualty  insurance  policies on the
Collateral  (other  than the Cash  Collateral)  for its  full  insurable  value,
subject to deductibles  acceptable to Lender.  Upon Lender's  request,  Borrower
will furnish evidence of such insurance  coverage,  as required.  Borrower shall
cause (i) all  insurance  policies to name Lender as an  additional  insured and
loss  payee,  and (ii) all  insurance  policies to provide  that no  assignment,
cancellation,  modification,  reduction or adverse  change in coverage  shall be
effective  until at least  thirty  (30) days after  Lender's  receipt of written
notice  thereof.  If  Borrower  fails to  furnish  said  insurance  as  required
hereunder, the Lender may do so or may obtain insurance of its interest,  adding
the amount of any such premium  thereof to the  Indebtedness,  but Lender is not
and will  not be  under  any  obligation  or duty to  obtain  or  maintain  such
insurance.  Borrower  hereby  assigns to Lender any insurance  proceeds  payable
under any of its insurance policies for physical damage and directs all insurers
to pay Lender any amount so due  unless  the  Indebtedness  has been  previously
satisfied.  Notwithstanding  any  provisions  of this  Section to the  contrary,
Lender shall give written  direction to such insurance  company that proceeds of
such  policies may be paid to Borrower  until the insurer has been notified that
an Event of Default exists under the Loan Agreement.

     10.  Borrower's Use of the  Collateral.  As long as no Event of Default has
occurred,  Borrower  may use the  Collateral  (consisting  of  tractors)  in the
ordinary course of Borrower's  business,  subject to any conditions set forth in
this Agreement. Upon the occurrence of an Event of Default,  Borrower's right to
so use the Collateral shall terminate until further written notice from Lender.

     11.  Remedies.  Upon the occurrence and continuation of an Event of Default
(as defined in the Loan Agreement),  Lender shall be entitled to exercise any or
all of the rights and  remedies  available  at law or in equity,  including  the
rights and remedies of a secured party under the applicable  Uniform  Commercial
Code (the "Code").  Lender's rights and remedies  include the right and power to
sell, at public or private sale or sales,  or otherwise  collect,  dispose of or
use all or any portion of the  Collateral  and any part or parts  thereof in any
manner  authorized  or permitted  under the Code.  Lender may apply the proceeds
thereof toward payment of the  Indebtedness  and toward payment of any costs and
expenses  (including  attorneys' fees and legal expenses)  incurred by Lender in
connection with any collection, sale or disposition of Collateral, in such order
or manner as Lender may elect in its sole  discretion.  Additionally,  and as an
essential part of the bargained-for  consideration  running to Lender and to the
extent  permitted by applicable law,  Borrower hereby expressly grants to Lender
the  contractual  right to purchase any or all of the Collateral at private sale
any time after ten (10) days'  notice of such sale has been sent to  Borrower by
Lender.  Upon Lender's demand following an Event of Default,  Borrower agrees to
assemble  the  Collateral  at its  usual  place of  business,  or at such  other
location as Lender may reasonably designate, and make it available to Lender. To
the extent that notice of sale is required by applicable  law,  Borrower  agrees
that notice given as provided in Section  13(a)  hereof,  at least ten (10) days
before the date of the  proposed  public sale or  disposition  or the date after
which a private  sale may be made  shall be deemed  reasonable  and shall  fully
satisfy any requirement of giving of notice.  Lender may postpone and reschedule
any proposed sale at its option without the necessity of giving Borrower further
notice of such fact as long as the  rescheduled  sale occurs  within  sixty (60)
days of the  originally  scheduled  sale.  All  recitals  in any  instrument  of
assignment or any other document executed by Lender incident to sale,  transfer,
assignment or other  disposition  or use of any  Collateral  hereunder  shall be


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sufficient to establish  full legal  propriety of the sale or other action taken
by  Lender  or of any  fact,  condition  or  thing  incident  thereto,  and  all
prerequisites  of such sale or other  action shall be  conclusively  presumed to
have been performed or to have occurred.

     12.  Borrower  Waivers.  Except as expressly  provided  herein,  and to the
fullest extent permitted by law, Borrower hereby waives (i) presentment,  demand
and protest and notice of presentment,  protest, default, non payment, maturity,
release, compromise,  settlement,  extension or renewal of any or all commercial
paper,  accounts,  contract rights,  documents,  instruments,  chattel paper and
guaranties at any time held by Lender on which Borrower may in any way be liable
and hereby  ratifies and confirms  whatever  Lender may do in this regard;  (ii)
notice prior to taking  possession  or control of the  Collateral or any bond or
security that might be required by any court before  allowing Lender to exercise
any of  Lender's  remedies,  including  the  issuance  of an  immediate  writ of
possession,  except as  expressly  required  herein;  (iii) any  marshalling  of
assets, or any right to compel Lender to resort first or in any particular order
to any other  collateral or other entities before enforcing its rights as to the
Collateral  or  pursuing  Borrower  for  payment of the  Indebtedness;  (iv) the
benefit  of all  valuation,  appraisement  and  exemption  laws;  (v)  notice of
acceptance  hereof;  (vi) any right to require  Lender to terminate its security
interest in the Collateral before both termination of this Agreement and payment
in full  of the  Indebtedness;  and  (vi)  any  claims  and  defenses  based  on
principles of suretyship or impairment of collateral. Borrower acknowledges that
the foregoing  waivers are a material  inducement to Lender's entering into this
Agreement  and that Lender is relying upon the  foregoing  waivers in its future
dealings with Borrower.

     13. General Authority.  Effective immediately but exercisable by Lender (or
its  designee)  only  upon an  Event of  Default,  Borrower  hereby  irrevocably
appoints   Lender   (or  its   designee)   as   Borrower's   true   and   lawful
attorney-in-fact,  which  appointment is hereby  coupled with an interest,  with
full power of  substitution,  in Lender's name or Borrower's  name or otherwise,
for  Lender's  sole use and benefit,  but at  Borrower's  cost and  expense,  to
exercise  at any time and from time to time all or any of the  following  powers
with respect to all or any of the  Collateral:  (a) to receive,  take,  endorse,
assign  and/or  deliver any  documents  relating to the  Collateral;  and (b) in
general,  to do all things  necessary to perform the terms of this Agreement and
to take any action or proceedings  that Lender deems necessary or appropriate to
protect and preserve Lender's security interest in the Collateral. In any event,
however, Lender's exercise of or failure to exercise any such authority shall in
no manner affect Borrower's  liability to Lender hereunder or in connection with
the Indebtedness; Lender shall be under no obligation or duty to exercise any of
the powers hereby conferred upon Lender;  and Lender shall have no liability for
any act or failure to act in connection with any of the Collateral.

     14. Lender's  Powers and Limited Duties.  Lender shall have no liability or
responsibility  for any diminution in the value of the Collateral from any cause
whatsoever.  Lender  shall be under no duty to collect any amount that may be or
become due on any of the Collateral, to redeem or realize on Collateral, to make
any  presentments,  demands or notices of protest in connection  with any of the
Collateral,  to take any steps  necessary to preserve  rights in any instrument,
contract or lease  against  third  parties or to preserve  rights  against prior
parties,  to remove any liens or to do anything for the enforcement,  collection
or  protection  of  Collateral,  except  to the  extent,  if any,  that the Code
requires Lender to use reasonable  care with respect to Collateral  while in its
possession.  Borrower  agrees  to pay all  taxes,  charges,  transfer  fees  and


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assessments  against the Collateral  and to do all things  necessary to preserve
and maintain the value and collectibility  thereof.  On Borrower's failure to so
do, Lender may, after giving Borrower  written notice of its intention to do so,
make such  payments and advance such sums on account  thereof as Lender,  in its
sole  discretion,   deems   desirable.   Borrower  agrees  to  reimburse  Lender
immediately upon demand for all such payments and advances plus interest thereon
at the maximum rate allowed by applicable law. All such amounts shall be part of
the Indebtedness.

     15. Construction, Definitions and Usage.

          (a)  Defined  Terms;  UCC Terms.  In addition to other words and terms
     defined in this Agreement  (including the  Exhibits),  the following  terms
     have the following  meanings herein,  unless the context expressly requires
     otherwise.  The term  "business  day" means any day other than a  Saturday,
     Sunday or day on which  commercial  banks are authorized to close under the
     laws of the State of  Tennessee.  The term "entity"  means any  individual,
     corporation,  partnership,  joint venture,  association,  limited liability
     company,   joint  stock  company,   trust,   unincorporated   organization,
     government,  or any agency or political  subdivision  thereof, or any other
     form of entity.  The terms  "includes" and "including" and words of similar
     import are  inclusive  and not  exclusive  terms,  and are not  intended to
     create any limitation.  All defined terms apply to both singular and plural
     forms,  and all references to any gender  include all other genders.  Terms
     used in this Agreement that are defined in the Uniform  Commercial  Code as
     adopted in the State of Tennessee (the "Code") shall have the same meanings
     herein,  except as  otherwise  expressly  provided  or  amplified  (but not
     limited) herein.

          (b) Captions; Exhibits;  Severability.  The captions in this Agreement
     are for  convenience  only,  and in no way limit or amplify the  provisions
     hereof.  All Exhibits and Schedules attached hereto are by reference made a
     part  hereof.  This  Agreement  is  severable,  and the  invalidity  of any
     provision shall not affect any other provision hereof.

          (c) References to Documents and Laws. All defined terms and references
     as to any agreements,  notes, instruments,  certificates or other documents
     shall be deemed to refer to such documents as they may from time to time be
     amended, modified, renewed, extended, replaced,  restated,  supplemented or
     substituted.  Unless  otherwise  provided,  all  references to statutes and
     related  regulations shall include any amendments thereof and any successor
     statutes and regulations.

     16. General Provisions.

          (a)  Notices.  All  notices  and  communications  required  under this
     Agreement  shall  be  given  in  accordance  with  the  terms  of the  Loan
     Agreement.

          (b)  Successors  and Assigns.  Borrower shall not assign its rights or
     delegate  its  duties  under  this  Agreement.   Borrower's  covenants  and
     agreements  herein shall bind  Borrower's  successors and assigns and shall
     inure to the benefit of Lender and its successors and assigns.  Lender may,
     at its option  from time to time  without  notice to  Borrower,  assign the
     Indebtedness and/or enter into participation or syndication agreements with
     other  lenders  approved by Lender on such terms and  conditions  as Lender
     shall deem advisable.

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          (c)  Amendments  and Waivers.  This  Agreement  may not be modified or
     amended  except in writing  signed by Borrower and Lender,  and none of its
     provisions may be waived except in writing signed by Lender. All additional
     and/or  substitute  Collateral  shall be  added  pursuant  to an  amendment
     executed  by  Borrower  and Lender in  substantially  the form  attached as
     Exhibit C. No waivers  shall be implied,  whether from any custom or course
     of dealing or any delay or failure in  Lender's  exercise of its rights and
     remedies  hereunder or  otherwise.  Any waiver  granted by Lender shall not
     obligate Lender to grant any further, similar, or other waivers.

          (d) Remedies.  All remedies  provided to Lender herein are cumulative,
     in addition to all other  remedies  available to Lender at law or in equity
     or  otherwise,  and the  exercise or partial  exercise of any such right or
     remedy shall not preclude the exercise of any other right or remedy.

          (e)  Governing  Law. This  Agreement  shall be construed in accordance
     with and governed by the laws of the State of Tennessee  (without regard to
     its rules on conflicts  of laws),  except to the extent,  if any,  that the
     location of the Borrower or the Collateral  may require the  application of
     other law to govern the perfection of security interests in the Collateral.

          (f)  Counterparts.  This  Agreement  may be  executed in any number of
     counterparts  (by facsimile  transmission or otherwise),  and each shall be
     deemed an original but all such  counterparts  shall constitute but one and
     the same instrument.

          (g)  Entire  Agreement;  No  Oral  Representations.   This  Agreement,
     together with the Guaranty,  represents  the entire  agreement  between the
     parties hereto with respect to the subject matter hereof,  superseding  any
     and all other agreements,  promises or representations existing prior to or
     made simultaneously with this Agreement.

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     ENTERED INTO as of the date first written above.
                                          BORROWER:

Address for Notices:                      Central Freight Lines, Inc.,
                                          a Texas Corporation

Central Freight Lines, Inc.
5601 West Waco Drive                      By:_________________________________
Waco, Texas 76710
Attn:  Patrick J. Curry                   Title:______________________________
FAX: (254) 741-5289


                                          LENDER:

Address for Notices:                      SunTrust Bank

SunTrust Bank
201 Fourth Avenue North                   By__________________________________
Nashville, Tennessee 37219
FAX: (615) 748-5269                       Title:______________________________
Attn: Bill Crawford

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