Exhibit 1
                                                                       ---------

                            JOINT FILING AGREEMENT
                            ----------------------

     In connection with the beneficial ownership of shares of common stock,
$1.00 par value, of Trinity Industries, Inc., Thrall Car Management Company,
Inc., a Delaware corporation, and Craig J. Duchossois hereby agree to the joint
filing on behalf of such persons of all filings, including the filing of a
Schedule 13D and all amendments thereto under the Securities Exchange Act of
1934, as amended (the "Exchange Act"), required under the Exchange Act pursuant
to which joint filing statements are permitted.

     IN WITNESS WHEREOF, the undersigned have caused this Joint Filing Agreement
to be executed as of August 23, 2001.

                                 THRALL CAR MANAGEMENT COMPANY, INC.



                                 By:   /s/ CRAIG J. DUCHOSSOIS
                                     -------------------------
                                     Name: Craig J. Duchossois
                                     Title: Chairman and President



                                 /s/ CRAIG J. DUCHOSSOIS
                                 ------------------------------
                                 Craig J. Duchossois



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