Official Web site of the Alameda Contra Costa County Transit District.
By 1912, all street railways in the Oakland area were consolidated into one company which would be known as the Key System. One major component of the Oakland transit operations was trans-bay service connecting Oakland with San Francisco. Trains connected with ferry boats until 1939, when the Bay Bridge was completed. For many years, the Key System operated the local and trans-bay services separately. In addition, the Southern Pacific Railroad operated a competing trans-bay electric rail service until 1941. In 1960, the Alameda Contra Costa County Transit District became responsible for public transportation in the East Bay area, acquiring the Key System. The last streetcars ran in 1948, and the last trans-bay trains ran in 1958.
Several individual streetcar companies were eventually consolidated into a single company, prior to complete conversion to buses.
How the street railways and bus lines evolved into today's transit system the Oakland area.
Zoomable Google Maps show locations of present transit facilities. Satellite views are also available.
In the San Francisco Bay Area, each county generally has its own transit system.
AC Transit Bus Roster
Jon Bell's Rail Transit Pages/San Francisco
Information from various sources, including the book "Key System Streetcars" by Vernon J. Sappers, the September-October 1993 and April-June 1996 issues of the magazine "Motor Coach Age", the Poor's and the Moody investment manuals, and "The Trolley And Interurban Directory", by Joseph Gross.
Chicago Transit & Railfan Web Site