S Shuttle

S Shuttle
An S Shuttle train at Embarcadero station in 2017
Overview
Owner	San Francisco Municipal Transportation Agency
Locale	San Francisco, California
Termini	Embarcadero station West Portal station
Stations	9
Service
Type	Light rail
System	Muni Metro
Operator(s)	San Francisco Municipal Railway
Daily ridership	2,700 (January 2024)[1]
History
Opened	April 2, 2001 (2001-04-02)
Technical
Track gauge	4 ft 8+1⁄2 in (1,435 mm) standard gauge
Electrification	Overhead line, 600 V DC
Route map S Shuttle highlighted in yellow Show interactive map Legend to 4th & King to East Bay turnback Embarcadero Montgomery Union Sq/​Market St Powell Civic Center to Millbrae & SFO Van Ness to Ocean Beach Church to Balboa Park Castro Forest Hill West Portal - to SF Zoo to Balboa Park This diagram: view talk edit Show route diagram

The S Shuttle is a light rail service on the Muni Metro system in San Francisco, California. The service began in 2001 as the S Castro Shuttle, an effort to reduce crowding at Castro station. It was briefly discontinued in 2007 when the T Third Street line was opened. Service was extended to St. Francis Circle station in 2013, but cut back to West Portal station in 2016. In 2020, it was changed to full-time service as part of a reconfiguration of Muni Metro service.^[2]

The designation of S Shuttle is also given to trains at other hours and locations, most commonly to those which run service before and after San Francisco Giants and Golden State Warriors games to provide additional capacity to Oracle Park and Chase Center respectively.