Section 25252.5 Of Article 7. Flashing And Colored Lights From California Vehicle Code >> Division 12. >> Chapter 2. >> Article 7.
25252.5
. (a) Every authorized emergency vehicle may be equipped
with a system which flashes the upper-beam headlamps of the vehicle
with the flashes occurring alternately from the front headlamp on one
side of the vehicle to the front headlamp on the other side of the
vehicle. The flashing of the headlamps shall consist only of
upper-beam flashing, and not the flashing of any other light beam.
(b) "Upper-beam headlamp," as used in this section, means a
headlamp or that part of a headlamp which projects a distribution of
light, or composite beam, so aimed and of such intensity as to reveal
persons and vehicles at a distance of at least 350 feet ahead for
all conditions of loading.
(c) The system provided for in subdivision (a) shall only be used
when an authorized emergency vehicle is being operated pursuant to
Section 21055.