21809 (A) SAVC Stationary Emergency Vehicle

21809. (a) A person driving a vehicle on a freeway approaching a
stationary authorized emergency vehicle that is displaying emergency
lights, or a stationary tow truck that is displaying flashing amber
warning lights, shall approach with due caution and, before passing
in a lane immediately adjacent to the authorized emergency vehicle or
tow truck, absent any other direction by a peace officer, proceed to
do one of the following:
(1) Make a lane change into an available lane not immediately
adjacent to the authorized emergency vehicle or tow truck with due
regard for safety and traffic conditions, if practicable and not
prohibited by law.
(2) If the maneuver described in paragraph (1) would be unsafe or
impracticable, slow to a reasonable and prudent speed that is safe
for existing weather, road, and vehicular or pedestrian traffic
conditions.