T1 (SEPTA Metro)

	A trolley approaching 36th Street Portal in 2011
Overview
Termini	13th Street; 63rd–Malvern/Overbrook;
Stations	6 underground stations, a surface level station, and 32 street-level stops
Service
System	SEPTA Metro
Operator(s)	SEPTA
Depot(s)	Callowhill Depot
Daily ridership	11,589 (2019 weekday ridership)
Technical
Line length	11.6 mi (18.7 km)[citation needed]
Track gauge	5 ft 2+1⁄4 in (1,581 mm) Pennsylvania trolley gauge
Electrification	Overhead line, 600 V DC
Route map
Route map
	Legend
	SEPTA Main Line
	to Glenside
	NEC/Keystone Corridor
	32nd Street Tunnel
	diversion tracks
	to 40th and Market
	Lansdowne & 63rd
	non-revenue track to 63rd & Haverford
	This diagram: view; talk; edit;

The T1 (Lancaster Avenue line) is one of the five T routes of the SEPTA Metro that connect 13th Street station in Center City Philadelphia, Pennsylvania, to the 63rd Street–Malvern Avenue station in the Overbrook section of West Philadelphia. Service is operated by the Southeastern Pennsylvania Transportation Authority.

^ "The history of trolley cars and routes in Philadelphia". SEPTA. June 1, 1974. p. 2. Retrieved June 11, 2014. An early city ordinance prescribed that all tracks were to have a gauge of 5' 2¹⁄₄"
^ Hilton, George W.; Due, John Fitzgerald (January 1, 2000). The Electric Interurban Railways in America. Stanford University Press. ISBN 9780804740142. Retrieved June 10, 2014.