B (S-train)
| B, Bx | |
|---|---|
| An advertisement train at Østerport station | |
| Overview | |
| Status | Operational | 
| Owner | Banedanmark | 
| Locale | Metropolitan Copenhagen | 
| Termini | 
 | 
| Stations | 29 | 
| Service | |
| Type | Suburban rail, urban rail | 
| System | S-train | 
| Operator(s) | DSB | 
| History | |
| Opened | 15 May 1934 | 
| Technical | |
| Line length | 39 km (24 mi) | 
| Number of tracks | 2 | 
| Track gauge | 1,435 mm (4 ft 8+1⁄2 in) standard gauge | 
| Electrification | 1500 V DC overhead lines | 
| Operating speed | 120 km/h (75 mph) | 
B is a service on the S-train network in Copenhagen. It runs between Farum and Høje Taastrup and provides stopping services on the S-train system's Farum radia and Tåstrup radial.
B is one of the base services on the network, running every 20 minutes from about 5:00 to 1:00 every day, and every 10 minutes between about 6:00 to 19:00 on weekdays. On Friday and Saturday nights there is also a 30 minutes service throughout the night.