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Transit Expressway Revenue Line
The Transit Expressway Revenue Line (TERL), commonly known as Skybus, was a proposed people mover rapid transit system developed by Westinghouse for the city of Pittsburgh, Pennsylvania during the 1960s–1970s. In contrast to the traditional streetcars then in use, the technology used a dedicated elevated concrete track and rubber-tired driverless cars. A demonstrator was built and operated in the South Hills area but political opposition killed the deployment of a larger system.
== History ==
Westinghouse, a Pittsburgh firm, developed the technology during the early 1960s in cooperation with the Port Authority of Allegheny County, a public entity which by 1964 controlled most mass transit in the Pittsburgh area. With support from the state of Pennsylvania and the federal government, Westinghouse and PAT built a demonstration track at the Allegheny County Fairgrounds in South Park. The cars, which could operate separately or be coupled together, were powered by a pair of motors and could travel at a maximum speed of . Each of the four cars was long and could seat 28. Power was provided a 565 volt three-phase AC underrail system.
During the 1960s the Port Authority formulated its so-called "Early Action Program," the purpose of which was to establish a more robust rapid transit system in Pittsburgh. The program called for an Skybus line and two "busways" (bus rapid transit routes), plus rehabilitation of existing equipment. The Skybus route would originate South Hills Village and follow existing streetcar right-of-way through the Mt. Lebanon and Beechview neighborhoods before reaching Downtown Pittsburgh via the unused Wabash Tunnel. The entire project would cost $295 million; Skybus alone was $232 million.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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