and to see where service can be improved or streamlined to provide faster and more reliable service. The project was launched in a context in which twenty-five years had passed since the last comprehensive review, and travel patterns had changed, traffic congestion had increased, operating costs had risen and on-time performance had dropped since then. Under the Muni Forward project, service improvements were implemented on many lines such as the 5 Fulton and 14R Mission. Further improvements on lines such as the 28 19th Avenue, 22 Fillmore, 30 Stockton, and others are planned. For streetcar service, extending the E Embarcadero and the F Market and Wharves into Mission Bay and the Fort Mason Tunnel is possible. Existing F Market & Wharves service is planned to be improved under the Better Market Street project with a new loop at Civic Center. Additionally, there are plans to expand trolleybus service in several parts of the city. Several extensions to existing trolleybus lines are planned, including 14-Mission service to the Daly City BART station, 6-Haight/Parnassus service to West Portal Station, 33-Ashbury/18th Street service across Potrero Hill to Third Street, 45-Union-Stockton service to the Letterman Digital Arts Center in the Presidio and 24-Divisadero service into the former Hunters Point shipyard. Other expansion plans include electrification of some diesel bus lines, with the most likely lines for conversion being the 9-San Bruno, 10-Townsend and 47-Van Ness. Electrification of the 10-Townsend line would likely be joined by an extension of the line across Potrero Hill to San Francisco General Hospital. Other lines that may be electrified are the 7-Haight-Noriega, 27-Bryant, and 43-Masonic. See also Key System Market Street Railway Company San Francisco cable car system Trolleybuses in San Francisco Notes References Further reading Perles, Anthony, with John McKane, Tom Matoff, and Peter Straus, The People's Railway: The History of the Municipal Railway in San Francisco. Glendale: Interurban Press, 1981. . A detailed, illustrated history of Muni from its inception through 1980. External links NextBus for Muni, a GPS system that predicts vehicle arrival times. Market Street Railway Public transportation in San Francisco Intermodal transportation authorities in California Bus transportation in California Passenger rail transportation in California Electric railways in California Rapid transit in California Bus rapid transit in California Tram, urban railway and trolley companies Companies based in San Francisco Transport companies established in 1912 1912 establishments in California Standard gauge railways in the United States