The 1 California is a trolleybus line operated by the San Francisco Municipal Railway (Muni).

[3] The 1X California Express operates in the peak direction during weekday rush hours, with limited service.

[14]A fictionalized version of the 1 California is featured in a chase scene in the 2021 Marvel film Shang-Chi and the Legend of the Ten Rings.

At a crucial moment, Shang-Chi pulls the stop request cord, signaling Katy to intentionally split the bus and leave Razor Fist behind in the back half.

[17] The chase scene on the 1 California was well-received, with San Francisco Chronicle critic Peter Hartlaub describing it as the second-best San Francisco car chase scene of all time, second only to Bullitt (1968).

[15] Media coverage of the scene also highlighted a humorous exchange on Twitter between a San Francisco bus driver and Shang-Chi star Simu Liu, where Liu responded positively to a detailed critique of the scene's realism.