Muni
Muni, which includes buses and streetcars that move both above and below ground, is the primary form of public transportation in San Francisco. Of the two, the bus is the most widespread with a few dozen lines scattered throughout the city. On busier routes, keep an eye out for “limited” buses (signified with a L behind the number) which move more quickly and make fewer stops. Streetcar lines are identified by letters and can be boarded at above ground stops on a few major thoroughfares including Market Street, the Embarcadero and Judah Street. All underground Muni stops are located downtown or on the south side of the city. A one-way ticket is good for 90-mins of transit, including changing Muni lines or switching to BART.