For modern cities in the United States, trams are a rare form of public transport. The exception is San Francisco, where the cable car survived and became so famous that it entered the US National Register of Historic Places.
The cable car system appeared in the city back in 1873. By the beginning of the 20th century, this type of transport was very popular and served eight lines. The decline began in the twenties, when motorization came to the United States, and trams were replaced by cheaper and easier-to-service buses. In 1947, the authorities tried to get rid of the cable cars, but the public managed to defend them.