TRINITY INDUSTRIES INC — Director's Dealing 2004

Dec 17, 2004

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: TRINITY INDUSTRIES INC (NYSE/TRN)
CIK: 0000099780
Period of Report: 2004-12-15

Reporting Person: FORTADO MICHAEL G (VP&Secretary)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2004-12-15	Common Stock	M	10000	$18.95	Acquired	22349	Direct
2004-12-15	Common Stock	S	10000	$32.91	Disposed	12349	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2004-12-15	Employee Stock Option (Right to Buy)	$18.95	M	10000	Disposed		Common Stock (10000)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	2718	Indirect

Footnotes

F1: Option Term is Ten Years. Options vest over 3 years at thirty three and one third (33.33%) percent per year beginning on the first anniversary of the grant date.