San Francisco is the only place in the country that provides vintage transit in the form of cable cars, streetcars and trolley coaches, all of which operate as part of the city’s MUNI rail system. Each of these forms of public transit vary slightly by their design. For example, streetcars feature a trolley pole, which is linked to a wire overhead. Cable cars, which can be confused with streetcars, do not feature the connecting wire.
The trolley coaches that run in sections of the city look like buses. However, the conveyances are operated totally by electricity and feature two poles on the roof that are powered by two wires overhead.
Currently, four of the trolley-type coaches are being preserved and maintained by MUNI and the Market Street Railway organization. The four coaches, which are currently not in use, are approximately 70 years old.