Exhibit 21

TRINITY INDUSTRIES, INC.
Subsidiaries as of December 31, 2010

		Organized	Ownership by
Name of Subsidiary	under laws of		Registrant
CJB Prime Property, LLC		Delaware		100	%
QEAS, Inc.		Delaware		100	%
Quixote Latin America, Inc.		Delaware		100	%
Quixote Transportation Safety Mexico S. de R.L. de C.V.		Mexico		0.1	%
Quixote Transportation Safety, Inc.		Delaware		100	%
Quixote Transportation Safety Mexico S. de R.L. de C.V.		Mexico		99.9	%
Transafe Corporation		Delaware		100	%
Energy Absorption Systems, Inc.		Delaware		100	%
EAS Road Products, Inc.		Delaware		100	%
EAS Road Products (Singapore Branch), Inc.		Delaware		100	%
E-Tech Testing Services, Inc.		Delaware		100	%
Energy Absorption Systems (Europe), Inc.		Delaware		100	%
Energy Absorption Systems (AL) LLC		Delaware		100	%
Quixote (Hong Kong) Limited		Hong Kong		100	%
Quixote International Enterprises, LLC		Delaware		100	%
Quixote (Beijing) Co., Ltd.		China		100	%
International Industrial Indemnity Company		Vermont		100	%
Reunion General Agency, Inc.		Texas		100	%
Transit Mix Concrete & Materials Company		Delaware		100	%
AMI Materials, Inc.		Delaware		100	%
Armor Aggregates, Inc.		Delaware		100	%
Transit Mix Concrete & Materials Company of Louisiana		Delaware		100	%
Transit Mix Transportation Services, LLC		Delaware		100	%
Trinity Materials, Inc.		Delaware		100	%
POB Exploration, LLC		Delaware		100	%
Trinity Argentina S.R.L.		Argentina		100	%
Trinity Containers, LLC		Delaware		100	%
Trinity Corporate Services, LLC		Delaware		100	%
Trinity Equipment Manufacturing Company		Delaware		100	%
Trinity Heads, Inc.		Delaware		100	%
Trinity Highway Products, LLC		Delaware		100	%
Trinity Industries International, Inc.		Delaware		100	%
Trinity Industries International Holdings AG		Switzerland		100	%
Administradora Especializada, S. de R.L. de C.V		Mexico		100	%
Servicios Corporativos Tatsa, S. de R.L. de C.V		Mexico		100	%
Grupo Tatsa, S. de R.L. de C.V		Mexico		100	%
Asistencia Profesional Corporativa, S.de R.L. de C.V.		Mexico		100	%
OFE, S. de R.L. de C.V.		Mexico		100	%
Trinity Industries de México, S. de R.L. de C.V.		Mexico		100	%
Trinity Industries do Brasil, Ltda.		Brazil		100	%
Trinity Industries Leasing Company		Delaware		100	%
Trinity Financial Services, Inc.		Delaware		100	%
Trinity Marine Leasing, Inc.		Delaware		100	%
Trinity Marks Company		Delaware		100	%
Trinity Rail Leasing 2010 LLC		Delaware		100	%
Trinity Rail Leasing Warehouse Trust		Delaware		100	%
TILX GP III, LLC		Delaware		100	%
Trinity Rail Leasing III LP		Texas		1	%
TILX LP III, LLC		Delaware		100	%
Trinity Rail Leasing III LP		Texas		99	%

		Organized	Ownership by
Name of Subsidiary	under laws of		Registrant
TILX GP IV, LLC		Delaware		100	%
Trinity Rail Leasing IV LP		Texas		1	%
TILX LP IV, LLC		Delaware		100	%
Trinity Rail Leasing IV LP		Texas		99	%
TILX GP V, LLC		Delaware		100	%
Trinity Rail Leasing V LP		Texas		1	%
TILX LP V, LLC		Delaware		100	%
Trinity Rail Leasing V LP		Texas		99	%
Trinity Rail Leasing VI LLC		Delaware		100	%
Trinity Rail Leasing VII LLC		Delaware		100	%
TRIP Rail Holdings, LLC		Delaware		57	%*
TRIP Rail Leasing, LLC		Delaware		100	%
Trinity Industries Metals Laboratory, Inc.		Delaware		100	%
Trinity Industries Railcar Corporation		Delaware		100	%
Trinity Logistics Group, Inc.		Texas		100	%
Bell Trucking, LLC		Delaware		100	%
Trinity Central Maintenance, LLC		Delaware		100	%
Trinity Marine Products, Inc.		Delaware		100	%
Trinity Composites, LLC		Delaware		100	%
Trinity Q, Inc.		Delaware		100	%
Trinity Rail Group, LLC		Delaware		100	%
Trinity Rail de Mexico, S. de R.L. de C.V.		Mexico		100	%
Trinity Rail Sabinas, S. de R.L. de C.V.		Mexico		100	%
Thrall International Holdings, LLC		Illinois		100	%
Trinity North American Freight Car, Inc.		Delaware		100	%
Trinity Parts & Components, LLC		Delaware		100	%
McConway & Torley, LLC		Delaware		100	%
Standard Forged Products, LLC		Delaware		100	%
Trinity Railcar Repair, Inc.		Delaware		100	%
MCM Railyard, LLC		Delaware		100	%
Trinity Rail GmbH		Switzerland		100	%
Trinity Tank Car, Inc.		Delaware		100	%
Trinity Rail, Inc.		Delaware		100	%
Trinity Rail Management, Inc.		Delaware		100	%
TrinityRail Canada Inc.		Brit Columbia		100	%
TILX GP I, LLC		Delaware		100	%
Trinity Rail Leasing I LP		Texas		1	%
TILX LP I, LLC		Delaware		100	%
Trinity Rail Leasing I LP		Texas		99	%
Trinity Specialty Products, Inc.		Delaware		100	%
Trinity Structural Towers, Inc.		Delaware		100	%
Trinity Traffic and Lighting Structures, LLC		Delaware		100	%
Trinity Utility Structures, LLC		Delaware		100	%
Waldorf Properties, Inc.		Delaware		100	%
Gambles, Inc.		Delaware		100	%
McConway & Torley – Anniston, Inc.		Delaware		100	%
Mosher Steel Company		Delaware		100	%
Platzer Shipyard, Inc.		Delaware		100	%
Standard Forgings Corporation		Delaware		100	%
Trinity Equipment Co., Inc.		Delaware		100	%

* Trinity Industries Leasing Company (TILC) is also the managing member of TRIP Rail Holdings, LLC.