B (S-train) explained

B, Bx
Type:	Suburban rail, urban rail
System:	S-train
Status:	Operational
Locale:	Metropolitan Copenhagen
Start:	farum
End:	Høje Taastrup
Stations:	29
Owner:	Banedanmark
Operator:	DSB
Linelength Km:	39
Tracks:	2
Electrification:	1500 V DC overhead lines

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.^[1]

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
	Frederikssundbanen all stops to Valby	1940–1941
	all stops to Vanløse	1941–1949
	all stops to Ballerup	1949–1950
B	terminated at København H	1950–1953
	Vestbanen all stops to Glostrup	1953–1963
	all stops to Taastrup	1963–1979
		1979–1986	Hareskovbanen all stops to Farum
	all stops to Høje Taastrup	1986–1989
		1989–2014	Nordbanen all stops to Holte
		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
	all stops to Høje Taastrup	1986–1989
L		1989–1995	Nordbanen all stops to Holte
B+		1995–2007
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
	to Taastrup, non-stop København H - Valby - Glostrup	1972–1979
		1979–1986	Hareskovbanen to Farum, non-stop Østerport - Kildebakke and Bagsværd - Værløse
	as above, extended to Høje Taastrup	1986–1989
	as above, plus all stops until Valby	1989–1993	as above, plus stop in Vangede
	to Høje Taastrup, non-stop København H - Valby	1993–1995	to Hellerup, non-stop from Østerport
	as above, except non-stop Valby - Glostrup	1995–2001	terminated at København H
		2001–2002	to Hellerup, non-stop from Østerport
		2002–2004	all stops to Hellerup
	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
	as above, but only morning rush	Dec 2009–	terminates at Østerport

Notes and References

1. Web site: DSB S-train valid until December 2017. DSB. 3:8 for line B (&Bx). 2017-10-01. 2017-02-15. https://web.archive.org/web/20170215070716/http://www.dsb.dk/globalassets/pdf/koereplaner/s-tog/2017/s-tog-30jan17.pdf. dead.