Until the 1950s, electric trolley trains ran along College Avenue on what is now AC Transit bus routes 51A and 51B. Additionally, as late as 1959, the railroad tracks of the Sacramento Northern Railway ran along Shafter Avenue, crossed College Ave. near where the Rockridge BART station is now and ran along the corridor of what is now state Highway 13 (the portion after Ashby Ave.), through Montclair Village and over into Contra Costa County. Film footage of this route has been broadcast over local PBS TV station KQED in a 1990s documentary on the development of the East Bay.