California Code, Streets and Highways Code - SHC § 30101.5

Thecommission may permit authorized emergency vehicles, as defined in Section 165 of the Vehicle Code, responding to or returning from mutual aid calls or other emergencies, and other vehicles owned by any public agency when called upon to perform emergency work on the property of any toll bridge, tube, or other toll highway crossing, to cross toll bridges, tubes, or other toll highway crossings without paying a toll.