A (S-train)

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A is a service on the S-train network in Copenhagen. It 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 from about 5:00 to 19:00. It runs between Hundige and Farum, serving all stations on the inner part of the Køge radial and on the Farum radial.

[edit] Stops

• Hundige
• Ishøj
• Vallensbæk
• Brøndby Strand
• Avedøre
• Friheden
• Åmarken
• Ny Ellebjerg
• Sjælør
• Sydhavn
• Dybbølsbro
• København H
• Vesterport
• Nørreport
• Østerport
• Nordhavn
• Svanemøllen
• Ryparken opened September 25, 1977
• Emdrup opened September 25, 1977
• Dyssegård opened September 25, 1977
• Vangede opened September 25, 1977
• Kildebakke opened September 25, 1977
• Buddinge opened September 25, 1977
• Stengården opened September 25, 1977
• Bagsværd opened September 25, 1977
• Skovbrynet opened September 25, 1977
• Hareskov opened September 25, 1977
• Værløse opened September 25, 1977
• Farum opened September 25, 1977

[edit] History

Since the first part of the Køge radial opened in 1972, letter A has been used for the principal service on its inner part. Before that time the most constant characteristic of service A was that it ran on the Klampenborg radial in the northern end of the system.

Name	Southern end	Years	Northern end
1a	all stops to Valby	1934–1940	Klampenborgbanen: all stops to Klampenborg
	terminated at København H	1940–1950
A	Frederikssundbanen: all stops to Vanløse	1950–1952
	as above, extended to Herlev in rush hours	1952–1972
	Køgebugtbanen: all stops to Vallensbæk	1972–1976
	all stops to Hundige	1976–1979
	all stops to Hundige; extended to Solrød Strand evenings and weekends	1979–1983	Nordbanen: all stops to Holte
	all stops to Hundige	1983–1989
		1989–1999	Nordbanen: to Hillerød, non-stop Østerport-Hellerup-Lyngby-Holte
		1999–2007	as above except all stops until Hellerup
		Sep 2007-	Hareskovbanen: all stops to Farum

[edit] Ax, K, A+

Until 2007, separate service designations were used for trains that reinforced the basic service on the Køge radial in high-traffic periods. This was in part because they had their own stopping patterns, and in part due to the then-current doctrine that a service letter such as A must not be used for more than exactly 3 trains an hour. The first supplementary service was the rush-hour Ax which started running when the first phase of the Køge radial opened in 1972. It was upgraded to the daytime K service in 1992 and quickly renamed to A+ in 1993.

Name	Southern end	Years	Northern end
Ax	Køgebugtbanen: all stops to Vallensbæk	1972–1976	terminated at Hellerup
	all stops to Hundige	1976–1979
	to Hundige but stopping where?	1979–1983	terminated at Hellerup or Østerport?
	to Hundige, non-stop København H - Friheden	1983–1992	terminated at Østerport
K		1992–1993
A+		1993–1995
	to Køge, non-stop København H - Sjælør - Friheden	1995–1998
	as above, plus stop at Sydhavn	1998–2002
	as above, plus stop at Dybbølsbro	2002–2005
		2006–2007	Hareskovbanen: to Buddinge Mon-Fri
Joined into A from September 2007