| WTraffic and Vehicle Pictures | |
| Picture Collection | |
| Germany | |
| Private railways & industry | |
| O | ||
| Oberweißbacher Bergbahn | |
| ODEG: Ostdeutsche Eisenbahn GmbH | |
| OHE: Osthannoversche Eisenbahnen | |
| OLA: Ostseeland Verkehr GmbH | |
| ONRAIL | |
| Opel | |
| OREG: Odenwaldbahn (Rhein-Main-Neckar) | |
| OSB: Ortenau S-bahn |