| Südostbayernbahn | |
|---|---|
| Overview | |
| Status | In Service |
| Owner | Deutsche Bahn AG |
| Locale | Bavaria, Germany |
| Stations | 88 |
| Service | |
| Type | Rapid Transit, Regional Rail |
| Depot(s) | Mühldorf |
| Rolling stock | Class 213 (2) Class 218 (26) Class 245 (8) Class 426 Class 628 (34) |
| Daily ridership | 26,000 |
| History | |
| Opened | 2001 |
| Technical | |
| Line length | 540 kilometres (340 mi) |
| Track gauge | 1,435 mm (4 ft 8+1⁄2 in)standard gauge |
| Electrification | None |
| Operating speed | 150 kilometres per hour (93 mph) |
Südostbayernbahn (Southeast Bavaria Railway) is one of several regional railway networks inGermany owned by Germany's national railway,Deutsche Bahn AG (DB AG). Since 2001, the network has included the railway hub ofMühldorf which connects 7 major railway lines fromMunich,Rosenheim,Freilassing,Burghausen,Simbach am Inn,Passau andLandshut, forming a star-shaped network of lines calledLinienstern Mühldorf ("Mühldorf route star network").[1]SüdostBayernBahn is subordinated toDB RegioNetz Verkehr andDB RegioNetz Infrastruktur.
In order to be able to operate railway networks more efficiently on a geographical basis, the Deutsche Bahn introduced the concept of regional networks orRegio-Netze. One of the five nationalRegio-Netze is called theSüdostbayernbahn (SOB) and is responsible for theinfrastructure, and/or passenger services, on the following routes:

| Line | Timetable No. | Route | Infrastructure | Services |
|---|---|---|---|---|
| RB 32 | KBS 932,Gäubodenbahn | Neufahrn (Ndby.)–Straubing–Bogen | X | |
| RB 40 | KBS 940[2] | Munich–Mühldorf | X | |
| RB 44 RB 45 | KBS 945 | Mühldorf–Neumarkt-St. Veit–Landshut | X | X |
| exKBS 427h | Neumarkt-St. Veit–Frontenhausen-Marklkofen | X | withdrawn | |
| RB 46 | KBS 946,Rottalbahn | Neumarkt-St. Veit–Passau | X | X |
| RB 41 | KBS 941 | Mühldorf–Simbach am Inn | X | X |
| RB 42 | KBS 942 | Mühldorf–Burghausen | X | X |
| RB 45 | KBS 945 | Mühldorf–Garching–Freilassing | X | X |
| KBS 951(sections of) | Freilassing–Salzburg | X | ||
| RB 47 | KBS 947,Traun-Alz-Bahn | (Mühldorf–)Garching–Trostberg–Hörpolding | X | X |
| RB 49 | KBS 949 | Traunreut–Hörpolding–Traunstein | X | X |
| RB 52 | KBS 952 | Prien am Chiemsee–Aschau im Chiemgau | X | |
| RB 59 | KBS 959 | Traunstein–Waging | X | X |
| KBS 953 | Traunstein–Ruhpolding | X | BRB (since Dec 2022) | |
| RB 44 | KBS 944 | Rosenheim–Wasserburg–Mühldorf | X | X |
| RB 48 | KBS 948,Filzenexpress | Wasserburg–Ebersberg | X | X |
| RB 48 | KBS 948,951 (sections of) | Ebersberg–Grafing–Munich | X |
Südostbayernbahn has rented the lines for an extended period of time and is therefore classed as the railway infrastructure company for its network. The renting of the routes fromDB Netz is done throughDB RegioNetz Infrastruktur.
As a railway infrastructure company,Südostbayernbahn now only operates trains which providepassenger services (the freight services toFrontenhausen-Marklkofen having been taken over byRailion). These passenger services are provided usingClass 218 locomotives andClass 628 diesel multiple units. Amongst the coaches used are modernizedSilberling carriages anddouble-decker coaches. The double-deckers include three air-conditioned double-decker driving cars. The delivery of the latest class of air-conditioned, double-decker coaches began in March 2007. On those routes for whichSüdostbayernbahn is only responsible for infrastructure,RegionalBahn trains are operated byDB Regio Bayern using Class 628diesel multiple units andClass 426electric multiple units. In additionRegionalBahn trains are also run bySüdostbayernbahn themselves on the following lines:
In total the network has 435 km of line and 88 stations, which are worked daily by 260 trains. Around 9.5 million passengers useSüdostbayernbahn trains annually.