TRINITY INDUSTRIES INC — Director's Dealing 2011

May 3, 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: TRINITY INDUSTRIES INC (NYSE/TRN)
CIK: 0000099780
Period of Report: 2011-05-02

Reporting Person: ROCK DOUGLAS L (Director)

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2011-05-02	Trinity Stock Units	$0	A	4200	Acquired		Common Stock (4200)	Direct

Footnotes

F1: Restricted Stock Units granted pursuant to Trinity Industries, Inc. Stock Option & Incentive Plan. Distribution is 1 for 1 in Trinity Stock after Director's termination. Units vest on the 1st business day immediately preceding the 2012 Annual Meeting of Stockholders.