Category:Key System
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Category:600 V DC railway electrification
Category:1903 establishments in California
Category:Defunct companies based in California
Category:Defunct public transport operators in the United States
Category:Defunct California railroads
Category:Electric railways in California
Category:Historic American Engineering Record in California
Category:History of Oakland, California
Category:History of Alameda County, California
Category:History of Contra Costa County, California
Category:History of San Francisco
Category:Interurban railways in California
Category:Light rail in California
Category:Passenger rail transportation in California
Category:Public transportation in Alameda County, California
Category:Public transportation in Contra Costa County, California
Category:Public transportation in San Francisco
Category:Rail transportation in Oakland, California