PUBLIC TRANSPORTATION
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32% of San Francisco residents use public transportation in daily commuting to work, ranking it first on the West Coast and third overall in the United States. The San Francisco Municipal Railway, known as Muni, is the primary public transit system of San Francisco. Muni is the seventh largest transit system in the United States, with 210,848,310 rides in 2006. The system operates both a combined light rail and subway system, the Muni Metro, and a large bus network. Additionally, it runs a historic streetcar line, which runs on Market Street from Castro Street to Fisherman's Wharf. It also operates the famous cable cars, which have been designated as a National Historic Landmark and are a major tourist attraction.
Bay Area Rapid Transit, a regional Commuter Rail system, connects San Francisco with the East Bay through the underwater Transbay Tube. The line runs under Market Street to Civic Center where it turns south to the Mission District, the southern part of the city, and through northern San Mateo County, to the San Francisco International Airport, and Millbrae. Another Commuter Rail system,Caltrain, runs from San Francisco along the San Francisco Peninsula to San Jose.
The Transbay Terminal serves as the terminus for long-range bus service (such as Greyhound) and as a hub for regional bus systems AC Transit (Alameda & Contra Costa counties), WestCAT,SamTrans (San Mateo County), and Golden Gate Transit (Marin and Sonoma Counties).

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Amtrak California Thruway Motorcoach runs a shuttle bus from San Francisco to its rail stationacross the Bay in Emeryville. Lines from Emeryville Station include the Capitol Corridor, San Joaquin, California Zephyr, and Coast Starlight. Thruway service also runs south to San Luis Obispo, California with connection to thePacific Surfliner.
Megabus recently relaunched intercity bus service in California and Nevada. San Francisco riders can chose from three routes (SF-San Jose-LA, SF-Oakland-LA, & SF-Sacramento-Reno). The San Francisco stop is located in front of the Caltrain Station.
San Francisco Bay Ferry operates from the Ferry Building and Pier 39 to points in Oakland,Alameda, Bay Farm Island, South San Francisco, and north to Vallejo in Solano County. The Golden Gate Ferry is the other ferry operator with service between San Francisco and Marin County. Soltrans runs supplemental bus service between the Ferry Building and Vallejo.
Cycling is a popular mode of transportation in San Francisco. 75,000 residents commute by bicycle per day.
Pedestrian traffic is a major mode of transport. In 2011, Walk Score ranked San Francisco the second most walkable city in the United States.[233][234]
San Francisco was an early adopter of carsharing in America. The non profit City Carshare opened in 2001. Zipcar closely followed.
Bike sharing is planned for launch in August 2013 for San Francisco. The San Francisco Municipal Transportation Agency and Bay Area Air Quality Management District plan to start a 500 bike system in the downtown SF core.
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