California Vehicle Code
Sec. § 210


An automated enforcement system is any system operated by a governmental agency, in cooperation with a law enforcement agency, that photographically records a drivers responses to a rail or rail transit signal or crossing gate, or both, or to an official traffic control signal described in Section 21450, and is designed to obtain a clear photograph of a vehicles license plate and the driver of the vehicle.
Source
Last accessed
Jun. 6, 2016