Abellio Group
Arriva UK Trains
Carload Express Inc
DB Service
Deutsche Bahn AG (DBAG)
FirstGroup plc
FS Italiane SpA (FS)
Genesee & Wyoming Inc (GWI)
Getlink
Go-Ahead Group plc
International Rail Partners LLC (IRP)
Ironhorse Resources Inc
Kansas City Southern (KCS)
Keolis (UK) Ltd
Keolis North America
LCR
Macquarie Infrastructure Partners
Midwest & Bluegrass Rail (MBR)
MidWest Pacific Rail Net & Logistics (MPR&L)
MTR Corp Ltd
MTR Nordic AB
National Express Group (NEG)
Netinera Deutschland GmbH
North Shore Railroad Company (NSHR)
ÖBB-Holding AG
Organismos Sidirodromon Ellados (OSE)
Pinsly Railroad Company
PKP SA
Rail Garant
RDC Deutschland GmbH
Regentalbahn AG – Die Länderbahn (RAG)
Regional Rail LLC
RJ Corman Railroad Group (RJCC)
Serco Group plc
Stagecoach Group plc
Texas Central Partners LLC
Transport UK Group Ltd (TUG)
Trenitalia UK
VR Group Ltd
Zeleznice Srbije Holding (ZS Holding)