Key System
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Key System may refer to: * Key telephone system, a multiline telephone systems typically used in business environments * Key System, a defunct transportation system in the San Francisco Bay Area * KeY System, a software verification tool * a cryptosystem using a Cryptographic key * system of keys on a flute, such as Boehm or Albert
The Key System (or Key Route) was a privately owned company that provided mass transit in the cities of Oakland, Berkeley, Alameda, Emeryville, Piedmont, San Leandro, Richmond, Albany, and El Cerrito in the eastern San Francisco Bay Area from 1903 until 1960, when it was sold to a newly formed public agency, AC Transit. The Key System consisted of local streetcar and bus lines in the East Bay, and commuter rail and bus lines connecting the East Bay to San Francisco by a ferry pier on San Francisco Bay, later via the lower deck of the Bay Bridge. At its height during the 1940s, the Key System had over of track. The local streetcars were discontinued in 1948 and the commuter trains to San Francisco were discontinued in 1958. The Key System's territory is today served by BART and AC Transit bus service. ====Lines==== Bayarearailfan.org, A gallery of Key System images Keyrailpix.org , image gallery Museumca.org, Postcard: Key Route Pier NYCsubway.org, Images CDlib.org, Photo: Key System train on Key Mole adjacent to new Bay Bridge, 1936 Key System train on the ramp to the Bay Bridge from the Transbay Terminal in San Francisco, 1939, Dorothea Lange photo 1951 Map of Rail and Bus services
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