TRINITY INDUSTRIES INC — Director's Dealing 2007

May 10, 2007

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: TRINITY INDUSTRIES INC (NYSE/TRN)
CIK: 0000099780
Period of Report: 2007-05-09

Reporting Person: McWhirter William A (VP & CFO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2007-05-09	Common Stock	M	1500	—	Acquired	163041	Direct
2007-05-09	Common Stock	F	546	$45.00	Disposed	162495	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2007-05-09	Restricted Stock Units	$0	M	1500	Disposed		Common Stock (1500)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	648	Indirect

Footnotes

F1: Restricted Stock Units granted pursuant to Trinity Industries, Inc. Stock Option & Incentive Plan. Units vest in varying percentages beginning on the 3rd anniversary date of the grant wtih 100% vesting on the 5th anniversary date of the grant. Distribution is 1 for 1 in Trinity Stock on each vesting date or later if elected by grantee.