page_title: List of San Francisco Municipal Railway lines
section_title: Express bus lines
hierarchical_section_title: List of San Francisco Municipal Railway lines / Express bus lines
caption_attribution_description: English: Muni route Nx bus with a blue rollsign on 19th Avenue at Judah Street in September 2018
context_page_description: The San Francisco Municipal Railway is the primary public transit system for San Francisco, California. Muni is part of the San Francisco Municipal Transportation Agency, which is also responsible for the streets, parking, traffic signals, and other transportation in the city. In 2019, Muni had the eighth-highest ridership among systems in the United States, with an average weekday ridership of 684,600. Service is operated to all parts of San Francisco - including Treasure Island - as well as small sections of Daly City and Marin County.
  Muni operates seven light rail lines in the Muni Metro system, two streetcar lines, and three cable car lines. Daytime bus service includes 44 local routes, 5 limited-stop "Rapid" routes, and 15 peak-hour express routes. Four additional express routes provide weekend service to the Marin Headlands, service to Oracle Park and the Chase Center and supplement BART in the early morning. Overnight night bus "Owl" service - part of the All Nighter network - includes eight 24-hour routes, two night-only routes, three bus replacements of Muni Metro lines, and five weekend early-morning Muni Metro replacement lines.
context_section_description: Muni operates several types of express routes. Twelve routes operate between outer neighborhoods and downtown. The local sections in the outer neighborhoods overlap with local routes of the same number, while the non-stop express sections operate on expressways or major arterials. They operate only during weekday peak hours, with service only in the peak direction. Buses in the opposite direction run deadhead except for the 8AX and 8BX, which are paired with the local route 8 in the non-peak direction. Eight of the express routes are paired into 'A' and 'B' types, which have different local segments on the same corridor.
  
  Three additional routes provide shorter-distance express service between the Caltrain commuter rail terminal at 4th and King station and business areas near Market Street. Like the outer express routes, they operate only at peak hours. The 81X and 82X operate only in the peak direction (the 81X operates only in the morning peak); the 83X has bidirectional service.
  Three express routes provide specialized service. The 76X, which runs only on weekends and holidays, provides service to recreational and tourist areas in the Marin Headlands. The 78X and 79X provide service to the Chase Center; they run only before and after events at the arena.
caption: A route Nx bus on 19th Avenue in 2018
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