C (AC Transit)

C
Overview
OperatorKey System (1906–1960)
AC Transit (1960–2020)
Began service1903 (1903)
Ended service2020
Route
LocalePiedmont, Oakland, San Francisco
StartHighland Ave. & Highland Way
ViaMoraga, Piedmont, 40th
EndSalesforce Transit Center
MapC
 B  List of AC Transit routes  D 

The C was a bus service operated by AC Transit in the San Francisco Bay Area. It is one of the operator's many transbay routes, which are intended to provide riders a long-distance service across the San Francisco Bay between the East Bay and San Francisco. It connected San Francisco with Piedmont Avenue in Oakland and the City of Piedmont. The service was descendant of a Key System streetcar and ferry line that operated prior to the formation of AC Transit. The line was suspended in response to the COVID-19 pandemic.