The sections of this chapter regulating the parking and standing of vehicles shall
not apply to any vehicle of the police department, the cheif of police's office or
fire department; any public or private ambulance; or any public utility vehicle which
is qualified as an authorized emergency vehicle, when such vehicle mentioned in this
section operates in the manner specified in the Vehicle Code in response to emergency
calls. The sections of this chapter regulating parking or standing of vehicles shall
not apply to any vehicle belonging to the government or a public utility or its agent
while necessarily in use on construction or repair work on or in the public right-of-way.
The foregoing exemption shall not, however, protect the driver of any such vehicle
from the consequences of his or her willful disregard of the safety of others.