R. W. Mac Company
R.A.T.P. Regie Autonome des Transports Parisiens
R.J. Corman Derailment Services, LLC
Rackl Hugo
Rader Thomas G.
Ragueneau Jean-Pierre
Raidt Joe B.
Raidt Patricia A.
Rail Runner Systems, Inc.
Rail-Or-Trail Corp.
Railcar Specialties, Inc.
Railgon Company
RailMaster System, Inc.
Railpower Technologies Corp.
Railroad Dynamics, Inc.
RailRunner Systems, Inc.
Railtrans S.A.
Railway & Industrial Services, Inc.
Railway Electrical Engineering Association of Japan
Railway Engineering Associates, Inc.