Trams are electric rail vehicles designed for fixed-route passenger transport, primarily utilized in urban and suburban environments. Functioning as a form of mass transit, these vehicles operate on specialized tracks laid within established street infrastructure. Power is typically drawn from overhead electric lines, which supply the motive force to the vehicle's motors. The technology requires significant underlying infrastructure, including the tracks, electrical substations, and overhead catenary system. Historically, this method of public transportation represents a reliable and high-capacity means of moving large numbers of people along fixed corridors, contributing to the development of city transit planning.