S4 (Rhine-Main S-Bahn)

S4
S4
	S4 at Frankfurt West station, bound for Kronberg
Overview
Status	Operational
Owner	Rhein-Main-Verkehrsverbund
Line number	4
Locale	Frankfurt Rhine-Main
Termini	Kronberg; Langen;
Stations	22
Service
Type	Rapid transit, Commuter rail
System	S-Bahn Rhein-Main
Services	Kronberg Railway; Homburg Railway; Citytunnel Frankfurt; Frankfurt Schlachthof–Hanau railway; Main-Neckar Railway;
Route number	645.4
Operator(s)	DB Regio
Depot(s)	Frankfurt Hbf
Rolling stock	DBAG Class 423
History
Opened	28 May 1978
Technical
Line length	33.5 km (20.8 mi)
Track gauge	1,435 mm (4 ft 8+1⁄2 in) standard gauge
Electrification	Overhead line

The S4 service of the S-Bahn Rhein-Main system bearing the KBS (German scheduled railway route) number 645.4

Routes edit

Kronberg Railway edit

Homburg Railway edit

City tunnel edit

The city tunnel is an underground, pure S-Bahn route used by almost all services (except for the S7 service which terminates at the central station). In a short section between Mühlberg and Offenbach-Kaiserlei the South Main railway is used.

Main-Neckar Railway edit

History edit

Year	Stations	Route
1974 (R4)	6	Kronberg – Frankfurt Hbf
1978	10 (+4)	Kronberg – Hauptwache
1983	11 (+1)	Kronberg – Konstablerwache
1990	14 (+3)	Kronberg – Frankfurt Süd
1997	19 (+5)	Kronberg – Langen
1999	21 (+2)	Kronberg – Langen
2002	22 (+1)	Kronberg – Langen

The S4 was one of the first six services of the Rhine-Main S-Bahn system. In a prior test operation it ran between Kronberg and Frankfurt Central Station. The service was then called R4 where the letter "R" stands for regional. After the opening of the Frankfurt Citytunnel the service was renamed to S4 and extended to the new Hauptwache underground station. Further extensions of the tunnel followed in 1983 (Konstablerwache) and 1990 (Ostendstraße and Lokalbahnhof) so that the Südbahnhof (South station) became the service's eastern terminal.

Operation edit

S4 entering the Frankfurt Citytunnel

Kronberg – Langen
Frankfurt Hbf – Langen
Kronberg – Darmstadt Hbf (Sundays only)

			Journey time			S-Bahn service since
1	2	3
Main-Taunus-Kreis edit
			0		Kronberg	1978
			2	+2	Kronberg Süd	1999
			5	+3	Eschborn-Niederhöchstadt	1978
			7	+2	Eschborn	1978
			9	+2	Eschborn-Süd	1978
Frankfurt am Main edit
			13	+4	Frankfurt-Rödelheim	1978
			16	+3	Frankfurt West	1978
			18	+2	Frankfurt Messe	1999
			20	+2	Frankfurt Galluswarte	1978
			23	+3	Frankfurt Hbf (tief)	1978
			25	+2	Taunusanlage	1978
			27	+2	Hauptwache	1978
			28	+1	Konstablerwache	1983
			30	+2	Ostendstraße	1990
			32	+2	Frankfurt Lokalbahnhof	1990
			34	+2	Frankfurt South Station	1990
			36	+2	Frankfurt Stresemannallee	1990
			38	+2	Frankfurt Louisa	1997
Kreis Offenbach edit
			41	+3	Neu-Isenburg	1997
			44	+3	Dreieich-Buchschlag	1997
			46	+2	Langen Flugsicherung	2002
			48	+2	Langen	1997
			51	+3	Egelsbach	1997
Kreis Darmstadt-Dieburg edit
			53	+2	Erzhausen	1997
Darmstadt edit
			55	+2	Darmstadt-Wixhausen	1997
			57	+3	Darmstadt-Arheilgen	1997
			61	+3	Darmstadt Hbf	1997