<SEC-DOCUMENT>0000099780-21-000061.txt : 20210505
<SEC-HEADER>0000099780-21-000061.hdr.sgml : 20210505
<ACCEPTANCE-DATETIME>20210505163949
ACCESSION NUMBER:		0000099780-21-000061
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20210503
FILED AS OF DATE:		20210505
DATE AS OF CHANGE:		20210505

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			SHIVE DUNIA A
		CENTRAL INDEX KEY:			0001182313

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-06903
		FILM NUMBER:		21894033

	MAIL ADDRESS:	
		STREET 1:		14221 N DALLAS PARKWAY
		STREET 2:		SUITE 1100
		CITY:			DALLAS
		STATE:			TX
		ZIP:			75254

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			TRINITY INDUSTRIES INC
		CENTRAL INDEX KEY:			0000099780
		STANDARD INDUSTRIAL CLASSIFICATION:	RAILROAD EQUIPMENT [3743]
		IRS NUMBER:				750225040
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		14221 N DALLAS PARKWAY
		STREET 2:		SUITE 1100
		CITY:			DALLAS
		STATE:			TX
		ZIP:			75254
		BUSINESS PHONE:		214-631-4420

	MAIL ADDRESS:	
		STREET 1:		14221 N DALLAS PARKWAY
		STREET 2:		SUITE 1100
		CITY:			DALLAS
		STATE:			TX
		ZIP:			75254

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	TRINITY STEEL CO INC
		DATE OF NAME CHANGE:	19720407
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2021-05-03</periodOfReport>

    <issuer>
        <issuerCik>0000099780</issuerCik>
        <issuerName>TRINITY INDUSTRIES INC</issuerName>
        <issuerTradingSymbol>NYSE/TRN</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001182313</rptOwnerCik>
            <rptOwnerName>SHIVE DUNIA A</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>14221 N DALLAS PARKWAY</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 1100</rptOwnerStreet2>
            <rptOwnerCity>DALLAS</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>75254</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable></nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Trinity Stock Units</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>0</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2021-05-03</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>4576</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F1"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>4576</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>4576</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Restricted Stock Units granted pursuant to the Fourth Amended and Restated Trinity Industries, Inc. 2004 Stock Option and Incentive Plan.  Distribution is 1 for 1 in Trinity Stock after Director's termination.  Units vest upon the first annual stockholders meeting following the Date of Grant.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Christina Maldonado   For:  Dunia A. Shive</signatureName>
        <signatureDate>2021-05-05</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-24
<SEQUENCE>2
<FILENAME>ex24.htm
<TEXT>
<HTML><BODY><PRE>POWER OF ATTORNEY



Know all by these presents, the undersigned hereby constitutes

and appoints each of Jared S. Richardson, Christina Maldonado,

James E. Perry, and Steven L McDowell signing singly, the

undersigned's true and lawful attorney-in-fact to:



(1)  prepare and execute in the undersigned's name and on the

undersigned's behalf, and submit to the U.S. Securities and

Exchange Commission (the ?SEC?) a Form ID (or any successor

form), including amendments thereto, and any other documents

necessary or appropriate to obtain codes and passwords enabling

the undersigned to make electronic filings with the SEC of

reports required by Section 16(a) of the Securities Exchange Act

of 1934 (the ?Act?) or any rule or regulation of the SEC

promulgated thereunder;



(2)  execute for and on behalf of the undersigned, in the

undersigned's capacity as an officer and/or director of Trinity

Industries, Inc. (the ?Company?), Forms 3, 4, and 5 in

accordance with Section 16(a) of the Act or any rule or

regulation of the SEC promulgated thereunder;



(3)  do and perform any and all acts for and on behalf of the

undersigned which may be necessary or desirable to complete and

execute any such Form 3, 4, or 5, complete and execute any

amendment or amendments thereto, and file such form with the SEC

and any stock exchange or similar authority; and



(4)  take any other action of any type whatsoever in connection

with the foregoing which, in the opinion of such attorney-in-

fact, may be of benefit to, in the best interest of, or legally

required by, the undersigned, it being understood that the

documents executed by such attorney-in-fact on behalf of the

undersigned pursuant to this Power of Attorney shall be in such

form and shall contain such terms and conditions as such

attorney-in-fact may approve in such attorney-in-fact's

discretion.



The undersigned hereby grants to each such attorney-in-fact full

power and authority to do and perform any and every act and

thing whatsoever requisite, necessary, or proper to be done in

the exercise of any of the rights and powers herein granted, as

fully to all intents and purposes as the undersigned might or

could do if personally present, with full power of substitution

or revocation, hereby ratifying and confirming all that such

attorney-in-fact, or such attorney-in-fact's substitute or

substitutes, shall lawfully do or cause to be done by virtue of

this power of attorney and the rights and powers herein granted.

The undersigned acknowledges that the foregoing attorneys-in-

fact, in serving in such capacity at the request of the

undersigned, are not assuming, nor is the Company assuming, any

of the undersigned's responsibilities to comply with Section 16

of the Securities Exchange Act of 1934.



This Power of Attorney shall remain in full force and effect

until the undersigned is no longer required to file Forms 3, 4,

and 5 with respect to the undersigned's holdings of and

transactions in securities issued by the Company, unless earlier

revoked by the undersigned in a signed writing delivered to the

foregoing attorneys-in-fact.



IN WITNESS WHEREOF, the undersigned has caused this Power of

Attorney to be executed as of this 7th day of November, 2018.





Signature:  /s/  Dunia A. Shive

Printed Name:    Dunia A. Shive

</PRE></BODY></HTML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
