SECURITIES AND EXCHANGE COMMISSION

                             Washington, D.C. 20549

                                      -----


                                 SCHEDULE 13D/A
                                 (Rule 13d-101)

                     INFORMATION TO BE INCLUDED IN STATEMENT
                 FILED PURSUANT TO RULE 13d-1(a) AND AMENDMENTS
                     THERETO FILED PURSUANT TO RULE 13d-2(a)

                                (Amendment No. 2)

                            Trinity Industries, Inc.
                                (Name of Issuer)

                          Common Stock, $1.00 par value
                         (Title of Class of Securities)

                                   896522-10-9
                                 (CUSIP Number)

                               Craig J. Duchossois
                        Thrall Investment Company, L.L.C.
                      Thrall Investment Company II, L.L.C.
                       Thrall Car Management Company, Inc.
                                845 Larch Avenue
                            Elmhurst, Illinois 60126
                                 (603) 279-3600
                  (Name, Address and Telephone Number of Person
                Authorized to Receive Notices and Communications)


                                 August 1, 2002
                      (Date of Event Which Requires Filing
                               of This Statement)


If the filing person has previously filed a statement on Schedule 13G to report
the acquisition that is the subject of this Schedule 13D, and is filing this
schedule because of Rule 13d-1(e), 13d-1(f) or 13d-1(g), check the following box
[_].

                         (Continued on following pages)
                              (Page 1 of 24 Pages)



CUSIP NO. 896522-10-9                 13D/A                 Page 2 of 24 Pages

--------------- ---------------------------------------------------------------
1               NAME OF REPORTING PERSON
                I.R.S. IDENTIFICATION NO. OF ABOVE PERSON (ENTITIES ONLY)

                Thrall Investment Company, L.L.C.
--------------- ---------------------------------------------------------------
2               CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*      (a) [_]
                                                                       (b) [X]
--------------- ---------------------------------------------------------------
3               SEC USE ONLY

--------------- ---------------------------------------------------------------
4               SOURCE OF FUNDS*

                OO
--------------- ---------------------------------------------------------------
5               CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
                PURSUANT TO ITEM 2(d) or 2(e)                              [_]
--------------- ---------------------------------------------------------------
6               CITIZENSHIP OR PLACE OF ORGANIZATION

                Delaware
------------------------ ------ -----------------------------------------------
                         7      SOLE VOTING POWER

                                7,150,000 (See Item 5)
                         ------ -----------------------------------------------
   NUMBER OF SHARES      8      SHARED VOTING POWER
      BENEFICIALLY
     OWNED BY EACH              0
       REPORTING         ------ -----------------------------------------------
      PERSON WITH        9      SOLE DISPOSITIVE POWER

                                7,150,000 (See Item 5)
                         ------ -----------------------------------------------
                         10     SHARED DISPOSITIVE POWER

                                0
--------------- ---------------------------------------------------------------
11              AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                7,150,000 (See Item 5)
--------------- ---------------------------------------------------------------
12              CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
                CERTAIN SHARES*                                            [_]
--------------- ---------------------------------------------------------------
13              PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

                15.6% (See Item 5)
--------------- ---------------------------------------------------------------
14              TYPE OF REPORTING PERSON*

                OO
--------------- ---------------------------------------------------------------



CUSIP NO. 896522-10-9                 13D/A                 Page 3 of 24 Pages

--------------- ---------------------------------------------------------------
1               NAME OF REPORTING PERSON
                I.R.S. IDENTIFICATION NO. OF ABOVE PERSON (ENTITIES ONLY)

                Thrall Investment Company II, L.L.C.
--------------- ---------------------------------------------------------------
2               CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*      (a) [_]
                                                                       (b) [X]
--------------- ---------------------------------------------------------------
3               SEC USE ONLY

--------------- ---------------------------------------------------------------
4               SOURCE OF FUNDS*

                AF
--------------- ---------------------------------------------------------------
5               CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
                PURSUANT TO ITEM 2(d) or 2(e)                              [_]
--------------- ---------------------------------------------------------------
6               CITIZENSHIP OR PLACE OF ORGANIZATION

                Delaware
------------------------ ------ -----------------------------------------------
                         7      SOLE VOTING POWER

                                500,000 (See Item 5)
                         ------ -----------------------------------------------
   NUMBER OF SHARES      8      SHARED VOTING POWER
      BENEFICIALLY
     OWNED BY EACH              0
       REPORTING         ------ -----------------------------------------------
      PERSON WITH        9      SOLE DISPOSITIVE POWER

                                500,000 (See Item 5)
                         ------ -----------------------------------------------
                         10     SHARED DISPOSITIVE POWER

                                0
--------------- ---------------------------------------------------------------
11              AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                500,000 (See Item 5)
--------------- ---------------------------------------------------------------
12              CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
                CERTAIN SHARES*                                            [_]
--------------- ---------------------------------------------------------------
13              PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

                1.1% (See Item 5)
--------------- ---------------------------------------------------------------
14              TYPE OF REPORTING PERSON*

                OO
--------------- ---------------------------------------------------------------



CUSIP NO. 896522-10-9                 13D/A                 Page 4 of 24 Pages

--------------- ---------------------------------------------------------------
1               NAME OF REPORTING PERSON
                I.R.S. IDENTIFICATION NO. OF ABOVE PERSON (ENTITIES ONLY)

                Thrall Car Management Company, Inc.
--------------- ---------------------------------------------------------------
2               CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*      (a) [_]
                                                                       (b) [X]
--------------- ---------------------------------------------------------------
3               SEC USE ONLY

--------------- ---------------------------------------------------------------
4               SOURCE OF FUNDS*

                OO
--------------- ---------------------------------------------------------------
5               CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
                PURSUANT TO ITEM 2(d) or 2(e)                              [_]
--------------- ---------------------------------------------------------------
6               CITIZENSHIP OR PLACE OF ORGANIZATION

                Delaware
------------------------ ------ -----------------------------------------------
                         7      SOLE VOTING POWER

                                600,000 (See Item 5)
                         ------ -----------------------------------------------
   NUMBER OF SHARES      8      SHARED VOTING POWER
      BENEFICIALLY
     OWNED BY EACH              0
       REPORTING         ------ -----------------------------------------------
      PERSON WITH        9      SOLE DISPOSITIVE POWER

                                600,000 (See Item 5)
                         ------ -----------------------------------------------
                         10     SHARED DISPOSITIVE POWER

                                0
--------------- ---------------------------------------------------------------
11              AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                600,000 (See Item 5)
--------------- ---------------------------------------------------------------
12              CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
                CERTAIN SHARES*                                            [_]
--------------- ---------------------------------------------------------------
13              PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

                1.3% (See Item 5)
--------------- ---------------------------------------------------------------
14              TYPE OF REPORTING PERSON*

                CO
--------------- ---------------------------------------------------------------


CUSIP NO. 896522-10-9                  13D/A                 Page 5 of 24 Pages

--------------- ---------------------------------------------------------------
1               NAME OF REPORTING PERSON
                I.R.S. IDENTIFICATION NO. OF ABOVE PERSON (ENTITIES ONLY)

                Craig J. Duchossois
--------------- ---------------------------------------------------------------
2               CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*      (a) [_]
                                                                       (b) [X]
--------------- ---------------------------------------------------------------
3               SEC USE ONLY

--------------- ---------------------------------------------------------------
4               SOURCE OF FUNDS*

                OO
--------------- ---------------------------------------------------------------
5               CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
                PURSUANT TO ITEM 2(d) or 2(e)                              [_]
--------------- ---------------------------------------------------------------
6               CITIZENSHIP OR PLACE OF ORGANIZATION

                U.S. Citizen
------------------------ ------ -----------------------------------------------
                         7      SOLE VOTING POWER

                                150
                         ------ -----------------------------------------------
   NUMBER OF SHARES      8      SHARED VOTING POWER
      BENEFICIALLY
     OWNED BY EACH              8,250,000 (See Item 5)
       REPORTING         ------ -----------------------------------------------
      PERSON WITH        9      SOLE DISPOSITIVE POWER

                                150
                         ------ -----------------------------------------------
                         10     SHARED DISPOSITIVE POWER

                                8,250,000 (See Item 5)
--------------- ---------------------------------------------------------------
11              AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                8,250,150 (See Item 5)
--------------- ---------------------------------------------------------------
12              CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
                CERTAIN SHARES*                                            [_]
--------------- ---------------------------------------------------------------
13              PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

                18.0% (See Item 5)
--------------- ---------------------------------------------------------------
14              TYPE OF REPORTING PERSON*

                IN
--------------- ---------------------------------------------------------------



         This Schedule 13D/A Amendment No. 2 amends the Schedule 13D of Craig J.
Duchossois and Thrall Car Management Company, Inc., as amended by Schedule 13D/A
Amendment No. 1 of Craig J. Duchossois, Thrall Investment Company, L.L.C. and
Thrall Car Management Company, Inc., relating to the beneficial ownership of
shares of Trinity Industries, Inc.

Item 2 is hereby amended to read in its entirety as follows:

Item 2.  Identity and Background.
         ------------------------

         This statement is being filed by (i) Thrall Investment Company, L.L.C.,
a Delaware limited liability company ("TIC"), (ii) Thrall Investment Company II,
L.L.C., a Delaware limited liability company ("TIC II"), (iii) Thrall Car
Management Company, Inc., a Delaware corporation ("Management Company"), and
(iv) Craig J. Duchossois.

         TIC holds property for investment purposes. In connection with the
transactions reported in the Schedule 13D, as amended (the "Schedule 13D"), as
described more fully in Item 6, TIC acquired certain shares of Trinity
Industries, Inc. (the "Issuer"). The address of TIC's principal business and
principal office is 845 Larch Avenue, Elmhurst, Illinois 60126. Appendix A
hereto, which is incorporated herein by this reference, sets forth the name,
business address, present principal occupation or employment (and the name,
principal business and address of any corporation or other organization in which
such employment is conducted) and the citizenship of the members of the
operating board, executive officers and control persons of TIC.

         TIC II holds property for investment purposes. The address of TIC II's
principal business and principal office is 845 Larch Avenue, Elmhurst, Illinois
60126. Appendix B hereto, which is incorporated herein by this reference, sets
forth the name, business address, present principal occupation or employment
(and the name, principal business and address of any corporation or other
organization in which such employment is conducted) and the citizenship of the
members of the operating board, executive officers and control persons of TIC
II.

         Management Company holds property for investment purposes. As described
more fully in Item 6, the Issuer, in connection with the transactions reported
in this Schedule 13D, acquired certain direct and indirect subsidiaries of
Management Company that manufacture freight rail cars. The address of Management
Company's principal business and principal office is 845 Larch Avenue, Elmhurst,
Illinois 60126. Appendix C hereto, which is incorporated herein by this
reference, sets forth the name, business address, present principal occupation
or employment (and the name, principal business and address of any corporation
or other organization in which such employment is conducted) and the citizenship
of the directors, executive officers and control persons of Management Company.

         Craig J. Duchossois is principally employed as the Chief Executive
Officer of Duchossois Industries, Inc. His business address is 845 Larch Avenue,
Elmhurst, Illinois 60126. He is a citizen of the United States. The principal
address of Duchossois Industries, Inc., an Illinois corporation, is 845 Larch
Avenue, Elmhurst, Illinois 60126. Duchossois Industries, Inc.,

                                       6



through its subsidiaries, engages in the manufacture of commercial and consumer
access control devices and precision machined metal products, and has interests
in entertainment and venture capital.

         During the last five years, none of TIC, TIC II, Management Company or
Craig J. Duchossois, and, to the best knowledge of each of them, none of the
persons listed on Appendix A attached hereto, Appendix B attached hereto or
Appendix C attached hereto, has been (i) convicted in a criminal proceeding
(excluding traffic violations or similar misdemeanors) or (ii) a party to a
civil proceeding of a judicial or administrative body of competent jurisdiction
and as a result of such proceeding was or is subject to a judgment, decree or
final order enjoining future violations of, or prohibiting or mandating
activities subject to, federal or state securities laws or finding any violation
with respect to such laws.

Item 3 is hereby amended to read in its entirety as follows:

Item 3.  Source and Amount of Funds or Other Consideration.
         -------------------------------------------------

         The response to Item 6 is incorporated herein by this reference.

         Pursuant to the Agreement and Plan of Merger, dated as of August 13,
2001 (the "Merger Agreement"), among the Issuer, TCMC Acquisition Corp., an
Illinois corporation ("Merger Sub"), Thrall Car Manufacturing Company, an
Illinois corporation and a wholly owned subsidiary of Management Company
("Manufacturing Company"), and Management Company, on October 26, 2001, the
Issuer acquired Manufacturing Company and in exchange Management Company
acquired 7,150,000 shares of common stock, par value $1.00 per share ("Common
Stock"), of the Issuer (the "Merger"), which shares were immediately transferred
to TIC, all as more fully described in Item 6. Management Company has retained
beneficial ownership of 600,000 shares of Common Stock previously held of record
by, and acquired with funds available from the working capital of, Manufacturing
Company.

         TIC II acquired 500,000 shares of Common Stock, in the aggregate, for
an aggregate purchase price of $9,078,780.96, through purchases effected on
August 1, 2002, August 2, 2002 and August 5, 2002. Payment for such shares of
Common Stock was made by TIC II with a portion of the funds borrowed from Thrall
Omni Company, Inc., an affiliate of TIC II, pursuant to a Promissory Note dated
as of August 6, 2002 (the "Note"), which Note is filed as Exhibit 5 hereto and
incorporated herein by this reference. The Note provides for a maximum loan
amount of $25,000,000 and accrues interest at the monthly applicable federal
rate as published by the Internal Revenue Service, such interest to be paid
quarterly.

Item 4 is hereby amended to read in its entirety as follows:

Item 4.  Purpose of Transaction.
         -----------------------

         The response to Item 6 is incorporated herein by this reference.

         The purpose of the Merger was for most of Management Company's direct
and indirect subsidiaries to become part of the Issuer's operations, while
allowing Management Company


                                       7



and its affiliate, TIC, to retain an investment in the freight rail car
manufacturing industry through the ownership of shares of Common Stock.
Although, pursuant to the terms of the Stockholder's Agreement (as defined
below), the Issuer is obligated to name one nominee to the Issuer's board of
directors, none of TIC, Management Company or Mr. Duchossois has acquired shares
of Common Stock with the intention of acquiring control of the Issuer. The
Stockholder's Agreement places certain restrictions on the ability of TIC,
Management Company and affiliates of Management Company, including Mr.
Duchossois and TIC II, to acquire or dispose of securities of the Issuer.

         TIC II has acquired the shares of Common Stock for investment purposes
and not with the intention of acquiring control of the Issuer.

         At the present time, except as set forth in this Item 4, none of TIC,
TIC II, Management Company or Mr. Duchossois has any plans or proposals which
relate to or would result in any of the transactions or events enumerated in
paragraphs (a) through (j) of the instructions to Item 4 of Schedule 13D.

         The foregoing response to this Item 4 is qualified in its entirety by
reference to the Merger Agreement and the Stockholder's Agreement, dated October
26, 2001 (the "Stockholder's Agreement"), by and among the Issuer, Management
Company and TIC, which are filed as Exhibits 2 and 3 hereto, respectively, and
incorporated herein by this reference.

Item 5 is hereby amended to read in its entirety as follows:

Item 5.  Interest in Securities of the Issuer.
         -------------------------------------

         The response to Item 6 is incorporated herein by this reference.

         For the purposes of Rule 13d-3, as promulgated under the Securities
Exchange Act of 1934, as amended, TIC beneficially owns, and has sole voting and
disposition power of, 7,150,000 shares of Common Stock. Based on a total of
45,899,388 shares of Common Stock outstanding (as reported outstanding as of
April 30, 2002, pursuant to the Issuer's Form 10-Q for the quarterly period
ended March 31, 2002 (the "Outstanding Shares")), for purposes of Rule 13d-3,
TIC owns approximately 15.6% of the Outstanding Shares. The names of and
information with respect to the operating board members, executive officers and
control persons of TIC are set forth on Appendix A to this Schedule 13D, which
is incorporated herein by this reference.

         For the purposes of Rule 13d-3, TIC II beneficially owns, and has sole
voting and disposition power of, 500,000 shares of Common Stock, or
approximately 1.1% of the Outstanding Shares. The names of and information with
respect to the operating board members, executive officers and control persons
of TIC II are set forth on Appendix B to this Schedule 13D, which is
incorporated herein by this reference.

         For the purposes of Rule 13d-3, Management Company beneficially owns,
and has sole voting and disposition power of, 600,000 shares of Common Stock, or
approximately 1.3% of


                                       8



the Outstanding Shares. The names of and information with respect to the
directors, executive officers and control persons of Management Company are set
forth on Appendix C to this Schedule 13D, which is incorporated herein by this
reference.

         Craig J. Duchossois beneficially owns, and has sole voting and
disposition power of, 150 shares of Common Stock. By virtue of his ability to
vote a majority of the outstanding membership interests of TIC, as described on
Appendix A, Mr. Duchossois, for purposes of Rule 13d-3, may be deemed to
beneficially own the 7,150,000 shares of Common Stock issued to TIC in
accordance with the Merger Agreement (the "Merger Shares"), and therefore such
shares are reported herein as shares for which Mr. Duchossois has shared voting
and dispositive power. By virtue of his ability to vote a majority of the
outstanding membership interests of TIC II, as described on Appendix B, Mr.
Duchossois, for purposes of Rule 13d-3, may be deemed to beneficially own the
500,000 shares of Common Stock held of record by TIC II, and therefore such
shares are reported herein as shares for which Mr. Duchossois has shared voting
and dispositive power. By virtue of his ability to vote a majority of the
outstanding shares of Management Company, as described on Appendix C, Mr.
Duchossois, for purposes of Rule 13d-3, may be deemed to beneficially own the
600,000 shares of Common Stock held of record by Management Company, and
therefore such shares are reported herein as shares for which Mr. Duchossois has
shared voting and dispositive power. As a result, Mr. Duchossois may be deemed
to beneficially own 8,250,150 shares of Common Stock, or approximately 18.0% of
the Outstanding Shares. Mr. Duchossois disclaims beneficial ownership of the
8,250,000 shares not owned of record by him.

         Except as disclosed herein, none of TIC, TIC II, Management Company or
Craig J. Duchossois has effected any transactions in shares of Common Stock
during the preceding 60 days.


                                       9



Item 7.  Material to be Filed as Exhibits.
         ---------------------------------

         The following are filed herewith as Exhibits to the Schedule 13D.

           Exhibit
             No.        Description
           -------      -----------

              1         Joint Filing Agreement

              2         Agreement and Plan of Merger (incorporated by
                        reference to Exhibit 2.1 to the Issuer's Form 8-K
                        (Commission File No. 1-6903) filed August 16, 2001)

              3         Stockholder's Agreement
                        (incorporated by reference to Exhibit 7.1.8 to the
                        Agreement and Plan of Merger filed as Exhibit 2.1 to the
                        Issuer's Form 8-K (Commission File No. 1-6903)
                        filed August 16, 2001)

              4         Registration Rights Agreement
                        (incorporated by reference to Exhibit 7.1.10 to the
                        Agreement and Plan of Merger filed as Exhibit 2.1 to the
                        Issuer's Form 8-K (Commission File No. 1-6903)
                        filed August 16, 2001)

              5         Promissory Note


                                       10



                                    SIGNATURE

         After reasonable inquiry, and to the best of my knowledge and belief, I
certify that the information set forth in this statement is true, complete and
correct.

Date: August 12, 2002                   THRALL INVESTMENT COMPANY, L.L.C.


                                        By: /s/ Robert L. Fealy
                                            -----------------------------------
                                            Name:  Robert L. Fealy
                                            Title: Chief Operating Officer,
                                                   Chief Financial Officer
                                                   and Treasurer






                                       11



         After reasonable inquiry, and to the best of my knowledge and belief, I
certify that the information set forth in this statement is true, complete and
correct.

Date: August 12, 2002                   THRALL INVESTMENT COMPANY II, L.L.C.


                                        By: /s/ Robert L. Fealy
                                            -----------------------------------
                                            Name:   Robert L. Fealy
                                            Title:  Chief Operating Officer,
                                                    Chief Financial Officer
                                                    and Treasurer


                                       12



                                    SIGNATURE

         After reasonable inquiry, and to the best of my knowledge and belief, I
certify that the information set forth in this statement is true, complete and
correct.

Date: August 12, 2002                   THRALL CAR MANAGEMENT COMPANY, INC.


                                        By: /s/ Robert L. Fealy
                                            ----------------------------------
                                            Name:  Robert L. Fealy
                                            Title: Vice President


                                       13



                                    SIGNATURE

         After reasonable inquiry, and to the best of my knowledge and belief, I
certify that the information set forth in this statement is true, complete and
correct.

Date: August 12, 2002                   /s/ Craig J. Duchossois
                                        --------------------------------------
                                        Craig J. Duchossois


                                       14



Appendix A is hereby amended to read in its entirety as follows:

                                   APPENDIX A

              CERTAIN INFORMATION REGARDING DIRECTORS AND EXECUTIVE
                  OFFICERS OF THRALL INVESTMENT COMPANY, L.L.C.

         Set forth below are the names, positions with TIC, business addresses
and principal occupations of the operating board members and officers of TIC.
Each individual is a United States citizen.



         Names, Positions and Business Addresses           Present Principal Occupation
         ---------------------------------------           ----------------------------
                                                        
         Craig J. Duchossois                               Chief Executive Officer of Duchossois
         Operating Board Member and Chief                  Industries, Inc./1/
         Executive Officer
         845 Larch Avenue
         Elmhurst, IL  60126

         Richard L. Duchossois/2/                          Chairman of Duchossois Industries, Inc./1/
         Operating Board Member and Vice
         Chairman
         845 Larch Avenue
         Elmhurst, IL  60126

         Robert L. Fealy                                   Chief Financial Officer of Duchossois
         Chief Operating Officer, Chief Financial          Industries, Inc./1/
         Officer and Treasurer
         845 Larch Avenue
         Elmhurst, IL  60126

         David L. Filkin, Esq.                             Assistant General Counsel of Duchossois
         Secretary                                         Industries, Inc./1/
         845 Larch Avenue
         Elmhurst, IL  60126


--------
/1/ The principal address of Duchossois Industries, Inc., an Illinois
corporation, is 845 Larch Avenue, Elmhurst, IL 60126. Duchossois Industries,
Inc., through its subsidiaries, engages in the manufacture of commercial and
consumer access control devices and precision machined metal products, and has
interests in entertainment and venture capital.

/2/ Richard L. Duchossois owns, and has sole voting and disposition power with
respect to, 20,000 shares of Common Stock of the Issuer, which is less than 1%
of the shares of such Common Stock currently outstanding.


                                       15



         The members of TIC are various individuals and trusts. The voting and
disposition decisions of each trust are controlled by either a trustee, a
business advisor or an investment committee. By virtue of his position as sole
trustee or his control of a majority of the votes of the investment committee of
certain of these trusts, Craig J. Duchossois controls a majority of the
membership interests of TIC. Information with respect to Craig J. Duchossois is
set forth above and in the body of the Schedule 13D.


                                       16



Appendix B is hereby amended to read in its entirety as follows:

                                   APPENDIX B

              CERTAIN INFORMATION REGARDING DIRECTORS AND EXECUTIVE
                OFFICERS OF THRALL INVESTMENT COMPANY II, L.L.C.

         Set forth below are the names, positions with TIC II, business
addresses and principal occupations of the operating board members and officers
of TIC II. Each individual is a United States citizen.



         Names, Positions and Business Addresses       Present Principal Occupation
         ---------------------------------------       ----------------------------
                                                    
         Craig J. Duchossois                           Chief Executive Officer of Duchossois
         Operating Board Member and Chief              Industries, Inc./1/
         Executive Officer
         845 Larch Avenue
         Elmhurst, IL  60126

         Richard L. Duchossois/2/                      Chairman of Duchossois Industries, Inc./1/
         Operating Board Member and Vice
         Chairman
         845 Larch Avenue
         Elmhurst, IL  60126

         Robert L. Fealy                               Chief Financial Officer of Duchossois
         Chief Operating Officer, Chief Financial      Industries, Inc./1/
         Officer and Treasurer
         845 Larch Avenue
         Elmhurst, IL  60126

         David L. Filkin, Esq.                         Assistant General Counsel of Duchossois
         Secretary                                     Industries, Inc./1/
         845 Larch Avenue
         Elmhurst, IL  60126


--------
/1/ The principal address of Duchossois Industries, Inc., an Illinois
corporation, is 845 Larch Avenue, Elmhurst, IL 60126. Duchossois Industries,
Inc., through its subsidiaries, engages in the manufacture of commercial and
consumer access control devices and precision machined metal products, and has
interests in entertainment and venture capital.

/2/ Richard L. Duchossois owns, and has sole voting and disposition power with
respect to, 20,000 shares of Common Stock of the Issuer, which is less than 1%
of the shares of such Common Stock currently outstanding.


                                       17



         The members of TIC II are various individuals and trusts. The voting
and disposition decisions of each trust are controlled by either a trustee, a
business advisor or an investment committee. By virtue of his position as sole
trustee or his control of a majority of the votes of the investment committee of
certain of these trusts, Craig J. Duchossois controls a majority of the
membership interests of TIC II. Information with respect to Craig J. Duchossois
is set forth above and in the body of the Schedule 13D.


                                       18



Appendix C is hereby added, to read in its entirety as follows:

                                   APPENDIX C

              CERTAIN INFORMATION REGARDING DIRECTORS AND EXECUTIVE
                 OFFICERS OF THRALL CAR MANAGEMENT COMPANY, INC.

         Set forth below are the names, positions with Management Company,
business addresses and principal occupations of the directors and executive
officers of Management Company. Each individual is a United States citizen.



         Names, Positions and Business Addresses          Present Principal Occupation
         ---------------------------------------          ----------------------------
                                                       
         Craig J. Duchossois                              Chief Executive Officer of Duchossois
         Director, Chairman and President                 Industries, Inc./1/
         845 Larch Avenue
         Elmhurst, IL  60126

         Richard L. Duchossois/2/                         Chairman of Duchossois Industries, Inc./1/
         Director and Vice Chairman
         845 Larch Avenue
         Elmhurst, IL  60126

         Robert L. Fealy                                  Chief Financial Officer of Duchossois
         Director, Vice President                         Industries, Inc./1/
         845 Larch Avenue
         Elmhurst, IL  60126

         David L. Filkin, Esq.                            Assistant General Counsel of Duchossois
         Secretary                                        Industries, Inc./1/
         845 Larch Avenue
         Elmhurst, IL  60126


--------
/1/ The principal address of Duchossois Industries, Inc., an Illinois
corporation, is 845 Larch Avenue, Elmhurst, IL 60126. Duchossois Industries,
Inc., through its subsidiaries, engages in the manufacture of commercial and
consumer access control devices and precision machined metal products, and has
interests in entertainment and venture capital.

/2/ Richard L. Duchossois owns, and has sole voting and disposition power with
respect to, 20,000 shares of Common Stock of the Issuer, which is less than 1%
of the shares of such Common Stock currently outstanding.


                                       19



         The shares of Management Company are owned by various individuals and
trusts. The voting and disposition decisions of each trust are controlled by
either a trustee, a business advisor or an investment committee. By virtue of
his position as sole trustee or his control of a majority of the votes of the
investment committee of certain of these trusts, Craig J. Duchossois controls a
majority of the outstanding shares of Management Company. Information with
respect to Craig J. Duchossois is set forth above and in the body of the
Schedule 13D.


                                       20



                                  EXHIBIT INDEX

       Exhibit
         No.            Description
       -------          -----------

          1             Joint Filing Agreement

          2             Agreement and Plan of Merger (incorporated by
                        reference to Exhibit 2.1 to the Issuer's Form 8-K
                        (Commission File No. 1-6903) filed August 16, 2001)

          3             Stockholder's Agreement
                        (incorporated by reference to Exhibit 7.1.8 to the
                        Agreement and Plan of Merger filed as Exhibit 2.1
                        to the Issuer's Form 8-K (Commission File No.
                        1-6903) filed August 16, 2001)

          4             Registration Rights Agreement
                        (incorporated by reference to Exhibit 7.1.10 to
                        the Agreement and Plan of Merger filed as Exhibit
                        2.1 to the Issuer's Form 8-K (Commission File No.
                        1-6903) filed August 16, 2001)

          5             Promissory Note


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