in an unsuccessful 1953 petition. The Oakland City Planning Commission reported that since 1945, all the petitions from the Key System had invariably asked for cuts to service and increased fares, which also contributed to declining ridership. The last train crossed the bridge on , less than twenty years after service was inaugurated in 1939, despite the vital role the trains played. There have been several attempts to restore rail service across the bridge (though not necessarily into the Transbay Terminal), but none have been successful. Rebuilt for bus service During the next year, the Transbay Terminal was rebuilt into a bus depot. The tracks were removed and replaced with pavement for use primarily by the buses of the publicly owned successor of the Key System, AC Transit. All lines were operating from the rebuilt terminal by July 12, 1959, and Greyhound service was added on February 1, 1960. In 1971 Amtrak started running buses into the Transbay Terminal from the Southern Pacific's 16th Street Station. Bus service thrived until late 1974, when BART's Transbay Tube opened. Many people preferred BART over AC Transit. The tube didn't run through the terminal, resulting in its decline. Homeless people noticed the dropping commuters and took the chance to inhabit it. After formation of the Muni Metro, streetcars were replaced with light rail vehicles and rerouted through the upper level of the Market Street Subway. Rail service to the station was briefly revived by the F Market line, at first during historic streetcar festivals, but for full service by 1995. The line's extension to Fisherman's Wharf in March 2000 saw the end of rail traffic to the terminal. The last F-line trip departed from the Transbay Terminal at 12:55 a.m. on the night of March 3, and the track was abandoned in August 2000, the final use being a "farewell" trip by 1916-built work car C1 on August 18, with work on removal of the track on Fremont Street beginning soon afterwards. The Transbay Terminal hosted a cocktail lounge, a diner, a newsstand, and a state police office until the 1990s, when the tenants were either evicted or unable to meet safety regulations. Because the Terminal straddled First and Fremont streets, the large overpass structures and lobby spaces unofficially served to shelter numerous homeless people. Even after demolition commenced, several Transbay Terminal residents refused to move, preferring instead to sleep next to demolition