25950.  This section applies to the color of lamps and to any
reflector exhibiting or reflecting perceptible light of 0.05 candela
or more per foot-candle of incident illumination.  Unless provided
otherwise, the color of lamps and reflectors upon a vehicle shall be
as follows:
   (a) The emitted light from all lamps and the reflected light from
all reflectors, visible from in front of a vehicle, shall be white or
yellow, except as follows:
   (1) Rear side marker lamps required by Section 25100 may show red
to the front.
   (2) The color of foglamps described in Section 24403 may be in the
color spectrum from white to yellow.
   (b) The emitted light from all lamps and the reflected light from
all reflectors, visible from the rear of a vehicle, shall be red
except as follows:
   (1) Stoplamps on vehicles manufactured before January 1, 1979, may
show yellow to the rear.
   (2) Turn signal lamps may show yellow to the rear.
   (3) Front side marker lamps required by Section 25100 may show
yellow to the rear.
   (4) Backup lamps shall show white to the rear.
   (5) The rearward facing portion of any front-mounted double-faced
turn signal lamp may show amber to the rear while the headlamps or
parking lamps are lighted, if the intensity of the light emitted is
not greater than the parking lamps and the turn signal function is
not impaired.
   (6) Reflectors meeting the requirements of and installed in
accordance with Section 24611 shall be red or white, or both.
   (c) All lamps and reflectors visible from the front, sides, or
rear of a vehicle, except headlamps, may have any unlighted color,
provided the emitted light from all lamps or reflected light from all
reflectors complies with the required color.  Except for backup
lamps, the entire effective projected luminous area of lamps visible
from the rear or mounted on the sides near the rear of a vehicle
shall be covered by an inner lens of the required color when the
unlighted color differs from the required emitted light color.
Taillamps, stoplamps, and turn signal lamps that are visible to the
rear may be white when unlighted on vehicles manufactured before
January 1, 1974.



25951.  Any lighted lamp or device upon a motor vehicle other than
headlamps, spotlamps, signal lamps, or auxiliary driving lamps,
warning lamps which projects a beam of light of an intensity greater
than 300 candlepower shall be so directed that no part of the beam
will strike the level of the roadway at a distance of more than 75
feet from the vehicle.



25952.  (a) Lamps, reflectors, and area reflectorizing material of a
type required or permitted on a vehicle may be mounted on a load
carried by the vehicle in lieu of, or in addition to, such equipment
on the vehicle.  Such equipment shall be mounted on the load in a
manner that would comply with the requirements of this code and
regulations adopted pursuant to this code if the load were an
integral part of the vehicle.
   (b) Lamps on vehicles carried as a load shall not be lighted
unless such lamps are mounted in accordance with subdivision (a).