May 2012
All Railroad Services Corp American Public Transportation Association Amsted Rail Company Inc. Ansaldo STS USA Balfour Beatty Rail Inc Brandt Road Rail Corporation Comet Industries Dixie Precast Inc DRS Technologies Inc. Fabricated Metals Corp Finmeccanica GE Transportation Georgetown Rail Equipment Co. Global Rail Systems Inc Graham-White Manufacturing Co Helm Financial Corp. Herzog Railroad Services Inc. Industrial Networks Invensys Rail ITT Koni Enidine JF Brennan Co. Inc. JK-Co LLC Kenwood USA Corp., Communications Sector Knox Kershaw Inc Loram Maintenance Of Way Inc. LTK Engineering Services Mass Electric Construction Co Metra Michael Baker Jr Inc. MTU National Trackwork Inc. New York Air Brake Corporation Nutek Green Omni Products Inc. Plasser American Corp. Progress Rail Services Corp RailComm Railquip Inc. Railroad Cooperation & Education Trust Railroad Signal International Railway System Suppliers RailWorks Corp Rottler Manufacturing Sealeze Siemens Mobility Stanley Proto Industrial Tools Tiefenbach Trainyard Tech LLC Transportation Products Sales Co voestalpine Nortrak VTG Rail Inc. Walker Engineering Western Cullen Hayes Inc. Whiting Corp Whiting Corp Wilmore Electronics Co. Inc.