| B | ||||
|---|---|---|---|---|
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| Overview | ||||
| Operator | Key System (1906–1960) AC Transit (1960–2020) | |||
| Began service | 1906 | |||
| Ended service | 2020 | |||
| Route | ||||
| Locale | Oakland, San Francisco | |||
| Start | Lakeshore Ave. & Longridge Dr. | |||
| Via | Longridge Dr., Trestle Glen Rd. | |||
| End | Salesforce Transit Center | |||
| Timetable | B | |||
| Map | B | |||
| ||||
The B 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. 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.