Trolleybus transport

thumb|A Sunwin trolleybus in Shanghai, on the world's oldest operating trolleybus system thumb|Solaris Bus & Coach|Solaris trolleybus on the Arnhem trolleybus system in the Netherlands thumb|right|Video of a trolleybus in Ghent, Belgium thumb|right|New Flyer trolleybus in [[San Francisco]] A trolleybus (also known as trolley bus, trolley coach, trackless trolley, trackless tram (in the 1910s and 1920s), road tram or simply trolley) is an electric bus that draws power from dual overhead lines (generally suspended from roadside posts) using spring-loaded or pneumatically raised trolley poles. Tw

device allowing a tram or bus to collect current from overhead wires

device used to carry electrical power from overhead line or contact rail (electrical third or rarely even fourth rail) to a vehicle

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