EXHIBIT 21
TRINITY INDUSTRIES, INC.
Subsidiaries as of December 31, 2005
Organized | Ownership | |||||
Name of Subsidiary | Under Laws of | Percentage | ||||
Apromat, S.A. — Arad | Romania | 50 | % | |||
Astra Vagoane Arad, S.A | Romania | 96 | % | |||
ICPV, S.A. — Arad | Romania | 89 | % | |||
International Industrial Indemnity Company | Vermont | 100 | % | |||
Reunion General Agency, Inc | Texas | 100 | % | |||
Syro, Inc | Ohio | 100 | % | |||
Transit Mix Concrete & Materials Company | Delaware | 100 | % | |||
Transit Mix Concrete — Baytown, Inc | Texas | 100 | % | |||
Transit Mix Transportation Services, LLC | Delaware | 100 | % | |||
Transit Mix Concrete & Materials Co. of Louisiana | Delaware | 100 | % | |||
Trinity Argentina S.R.L | Argentina | 100 | % | |||
Trinity EE, Inc | Delaware | 100 | % | |||
Trinity Equipment Co., Inc | Delaware | 100 | % | |||
Trinity Fittings Group, Inc | Delaware | 100 | % | |||
Trinity Highway Safety Products, Inc | Delaware | 100 | % | |||
Trinity Industries Buffalo, Inc | 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 | % | |||
Grupo Tatsa, S. de R.L. de C.V | Mexico | 100 | % | |||
Trinity Industries de México, S. de R.L. de C.V | Mexico | 100 | % | |||
OFE, S. de R.L. de C.V | Mexico | 100 | % | |||
Asistencia Profesional Corporativa, S.de R.L. de C.V | Mexico | 100 | % | |||
Servicios Corporativos Tatsa, S. de R.L. de C.V | Mexico | 100 | % | |||
Trinity Industries do Brasil, Ltda | Brazil | 100 | % | |||
Trinity Industries GmbH | Switzerland | 100 | % | |||
Wagonmarket, spol. s r.o | Slovak Republic | 100 | % | |||
Trinity Industries Leasing Company | Delaware | 100 | % | |||
Transport Capital, LLC | Delaware | 100 | % | |||
Trinity Financial Services, Inc | Delaware | 100 | % | |||
Trinity Marine Leasing, Inc | Delaware | 100 | % | |||
Trinity Marks Company | Delaware | 100 | % | |||
TILX GP II, LLC | Delaware | 100 | % | |||
Trinity Rail Leasing II L.P | Texas | 1 | % | |||
TILX LP II, LLC | Delaware | 100 | % | |||
Trinity Rail Leasing II L.P | Texas | 99 | % | |||
Trinity Rail Leasing Trust II | Delaware | 100 | % | |||
TILX GP III, LLC | Delaware | 100 | % | |||
Trinity Rail Leasing III L.P | Texas | 1 | % | |||
TILX LP III, LLC | Delaware | 100 | % | |||
Trinity Rail Leasing III L.P | Texas | 99 | % | |||
TILC Equity OP GP III-C, LLC | Delaware | 100 | % | |||
TILC Equity OP III-C L.P | Texas | 1 | % | |||
TILC Equity OP LP III-C, LLC | Delaware | 100 | % | |||
TILC Equity OP III-C L.P | Texas | 99 | % | |||
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 | % | |||
Trinity Industries Real Properties, Inc | Delaware | 100 | % | |||
Trinity Industries Transportation, Inc | Texas | 100 | % | |||
Trinity Marine Products, Inc | Delaware | 100 | % | |||
Trinity Materials, Inc | Delaware | 100 | % | |||
Trinity Mining Services, Inc | Delaware | 100 | % |
Organized | Ownership | |||||
Name of Subsidiary | Under Laws of | Percentage | ||||
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 Vagonka Studénka, a.s | Czech Republic | 95 | % | |||
Thrall International Holdings LLC | Illinois | 100 | % | |||
Trinity Rail UK | Engl. & Wales | 100 | % | |||
Thrall Car Grantor Corporation | Delaware | 100 | % | |||
Thrall Company | Delaware | 100 | % | |||
Rail Project, s r.o | Slovak Republic | 100 | % | |||
Trinity North American Freight Car, Inc | Delaware | 100 | % | |||
DIFCO, Inc | Ohio | 100 | % | |||
Trinity Metals, s r.o | Czech Republic | 100 | % | |||
Trinity Parts & Components, Inc | Delaware | 100 | % | |||
McConway & Torley Corporation | Pennsylvania | 100 | % | |||
McConway & Torley — Anniston, Inc | Delaware | 100 | % | |||
Standard Forged Products, Inc | Delaware | 100 | % | |||
Trinity Railcar Repair, Inc | Delaware | 100 | % | |||
Trinity Rail GmbH | Switzerland | 100 | % | |||
Trinity Tank Car, Inc | Delaware | 100 | % | |||
Trinity Rail, Inc | Delaware | 100 | % | |||
Trinity Rail Management, Inc | Delaware | 100 | % | |||
TILX GP I, LLC | Delaware | 100 | % | |||
Trinity Rail Leasing I L.P | Texas | 1 | % | |||
TILX LP I, LLC | Delaware | 100 | % | |||
Trinity Rail Leasing I L.P | Texas | 99 | % | |||
Trinity Structural Towers, Inc | Delaware | 100 | % | |||
TRN, Inc | Delaware | 100 | % | |||
TRN Business Trust | Delaware | 100 | % |