# B (S-train)

B and Bx :
Legend :
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.

## History

Since the first part of the Taastrup radial opened in 1953, letter B has been used for its principal service. Before that the characteristic of service B was that it was the stopping trains to Holte.
| Name | Southern end | Years | Northern end |
| 1b | terminated at København H | 1936–1940 | Nordbanen: all stops to Holte |
| 1b | Frederikssundbanen: all stops to Valby | 1940–1941 | Nordbanen: all stops to Holte |
| 1b | all stops to Vanløse | 1941–1949 | Nordbanen: all stops to Holte |
| 1b | all stops to Ballerup | 1949–1950 | Nordbanen: all stops to Holte |
| B | terminated at København H | 1950–1953 | Nordbanen: all stops to Holte |
| B | Vestbanen: all stops to Glostrup | 1953–1963 | Nordbanen: all stops to Holte |
| B | all stops to Taastrup | 1963–1979 | Nordbanen: all stops to Holte |
| B | all stops to Taastrup | 1979–1986 | Hareskovbanen: all stops to Farum |
| B | all stops to Høje Taastrup | 1986–1989 | Hareskovbanen: all stops to Farum |
| B | all stops to Høje Taastrup | 1989–2014 | Nordbanen: all stops to Holte |
| B | all stops to Høje Taastrup | 2014– | Hareskovbanen: all stops to Farum |

### Bb, L, B+

From 1972 to 1979, the service on the Taastrup branch was supplemented on weekdays by service E (q.v.). In 1979 a separate daytime reinforcement service Bb was created; it ran every 20 minutes with a 10-minute offset to service B such that the Tåstrup radial effectively had a 10-minute frequency. Under the timetable doctrine followed in those years, a service letter such as B could not be used for more than exactly 3 trains an hour, so a separate service designation was needed for these daytime supplements. They later changed their name to L and then to B+, and were finally folded into B with the 2007 timetable.
| Name | Southern end | Years | Northern end |
| Bb | Vestbanen: all stops to Taastrup | 1979–1986 | terminated at Hellerup |
| Bb | all stops to Høje Taastrup | 1986–1989 | terminated at Hellerup |
| L | all stops to Høje Taastrup | 1989–1995 | Nordbanen: all stops to Holte |
| B+ | all stops to Høje Taastrup | 1995–2007 | Nordbanen: all stops to Holte |
| Joined into B from September 2007 ||||

### Bx

Rush-hour supplements for B ran from 1955:
| Name | Southern end | Years | Northern end |
| – | terminated at København H | 1955–1963 | Nordbanen: all stops to Lyngby |
| – | Vestbanen: all stops to Hvidovre | 1960–1963 | terminated at Hellerup |
| Bx | to Taastrup, non-stop København H - Hvidovre | 1963–1972 | to Lyngby, non-stop Østerport - Bernstorffsvej |
| Bx | to Taastrup, non-stop København H - Valby - Glostrup | 1972–1979 | to Lyngby, non-stop Østerport - Bernstorffsvej |
| Bx | to Taastrup, non-stop København H - Valby - Glostrup | 1979–1986 | Hareskovbanen: to Farum, non-stop Østerport - Kildebakke and Bagsværd - Værløse |
| Bx | as above, extended to Høje Taastrup | 1986–1989 | Hareskovbanen: to Farum, non-stop Østerport - Kildebakke and Bagsværd - Værløse |
| Bx | as above, plus all stops until Valby | 1989–1993 | as above, plus stop in Vangede |
| Bx | to Høje Taastrup, non-stop København H - Valby | 1993–1995 | to Hellerup, non-stop from Østerport |
| Bx | as above, except non-stop Valby - Glostrup | 1995–2001 | terminated at København H |
| Bx | as above, except non-stop Valby - Glostrup | 2001–2002 | to Hellerup, non-stop from Østerport |
| Bx | as above, except non-stop Valby - Glostrup | 2002–2004 | all stops to Hellerup |
| Bx | to Høje Taastrup daytime Mon-Fri; non-stop Danshøj - Glostrup | 2005 | Klampenborgbanen: all stops to Klampenborg daytime Mon-Fri |
| No service in 2006 due to infrastructure works ||||
| Bx | to Høje Taastrup rush hour Mon-Fri; non-stop Danshøj - Glostrup | 2007-2009 | Hareskovbanen: to Farum rush hour Mon-Fri; non-stop Ryparken - Vangede and in Skovbrynet |
| Bx | as above, but only morning rush | Dec 2009– | terminates at Østerport |