ISBeRG currently includes 14 railways in 13 world cities.
The current members of ISBeRG are:
- Ferrocarrils de la Generalitat de Catalunya (FGC)
Barcelona
- Queensland Rail (QR)
Brisbane
- S-Tog, Danish State Railways (DSB)
Copenhagen
- PRASA, Metrorail
Cape Town
- Hong Kong MTR
Hong Kong
- London Overground
London
- Metro Trains Melbourne (MTM)
Melbourne
- S-Bahn Munich, Deutsche Bahn (DB) Regio
Munich
- MTA Long Island Rail Road
New York
- MTA Metro-North Railroad
New York
- Norwegian State Railways (NSB)
Oslo
- Bay Area Rapid Transit (BART)
San Francisco
- Sydney Trains
Sydney
- East Japan Railway Company (JR East)
Tokyo