The Southeastern Pennsylvania Transportation Authority (SEPTA) is a regional public transportation authority that operates bus, rapid transit, commuter rail, light rail, and electric trolleybus services for nearly four million people in five counties in and around Philadelphia, Pennsylvania. It also manages projects that maintain, replace and expand its infrastructure, facilities and vehicles.
The former SEPTA Route 6 trolley in Philadelphia, c. 1980
The entrance to the 15–16th & Locust station on Locust Street in Center City Philadelphia, which serves as both a SEPTA and PATCO station
The concourse at the Walnut–Locust station
The above-ground Market–Frankford Line in the Kensington section of Philadelphia
A trolleybus is an electric bus that draws power from dual overhead wires using spring-loaded trolley poles. Two wires, and two trolley poles, are required to complete the electrical circuit. This differs from a tram or streetcar, which normally uses the track as the return path, needing only one wire and one pole. They are also distinct from other kinds of electric buses, which usually rely on batteries. Power is most commonly supplied as 600-volt direct current, but there are exceptions.
Busscar trolleybus in São Paulo, Brazil
Solaris trolleybus in Landskrona, Sweden
The "Elektromote", the world's first trolleybus, in Berlin, Germany, 1882
A double-deck trolleybus in Reading, England, 1966
