Here's some very useful info for you cali people.
(mods if this is the wrong section please move)
Modification of Vehicles
24008. It is unlawful to operate any passenger vehicle, or
commercial vehicle under 6,000 pounds, which has been
modified from the original design so that any portion of the
vehicle, other than the wheels, has less clearance from the
surface of a level roadway than the clearance between the
roadway and the lowermost portion of any rim of any wheel
in contact with the roadway.
Mounting Height
24254. Whenever requirement is declared as to the
mounted height of lamps or reflectors, the height shall be
measured from the center of the lamp or reflector to the level
surface upon which the vehicle stands when it is without a
load.
Headlamps on Motor Vehicles
24400. (a) A motor vehicle, other than a motorcycle,
shall be:
(1) ( ) 1 Equipped with at least two ( ) 2 headlamps, with
at least one on each side of the front of the vehicle, and, except
as to vehicles registered prior to January 1, 1930, they shall
be located directly above or in advance of the front axle of the
vehicle. The headlamps and every light source in any
headlamp unit shall be located at a height of not more than
54 inches nor less than 22 inches.
Foglamps
24403. (a) A motor vehicle may be equipped with not
more than two foglamps that may be used with, but may not
be used in substitution of, headlamps.
(b) On a motor vehicle other than a motorcycle, the
foglamps authorized under this section shall be mounted on
the front at a height of not less than 12 inches nor more than
30 inches and aimed so that when the vehicle is not loaded
none of the high-intensity portion of the light to the left of the
center of the vehicle projects higher than a level of four inches
below the level of the center of the lamp from which it comes,
for a distance of 25 feet in front of the vehicle.
Taillamps
24600.
(e) Taillamps shall be red in color and shall be plainly
visible from all distances within 500 feet to the rear except
that taillamps on vehicles manufactured after January 1,
1969, shall be plainly visible from all distances within 1,000
feet to the rear.
License Plate Lamp
24601. Either the taillamp or a separate lamp shall be so
constructed and placed as to illuminate with a white light the
rear license plate during darkness and render it clearly
legible from a distance of 50 feet to the rear. When the rear
license plate is illuminated by a lamp other than a required
taillamp, the two lamps shall be turned on or off only by the
same control switch at all times.
Backup Lamps
24606.
(b) Backup lamps shall be so directed as to project a white
light illuminating the highway to the rear of the vehicle for a
distance not to exceed 75 feet. A backup lamp may project
incidental red, amber, or white light through reflectors or
lenses that are adjacent or close to, or a part of, the lamp
assembly.
Turn Signal Lamps
24953. (a) Any turn signal system used to give a signal
of intention to turn right or left shall project a flashing white
or amber light visible to the front and a flashing red or amber
light visible to the rear.
Flashing Lights
25250. Flashing lights are prohibited on vehicles except
as otherwise permitted.
To sum up what flashing lights are permitted; Hazard lights, Blinkers, Emergency Vehicles, Tow Trucks, School Busses, and Funeral Processions.
Colors of Lamps and Reflectors
25950.
(2) The color of foglamps described in Section 24403 may
be in the color spectrum from white to yellow.
Sirens
27002. No vehicle, except an authorized emergency
vehicle, shall be equipped with, nor shall any person use upon
a vehicle any siren except that an authorized emergency
vehicle shall be equipped with a siren meeting requirements
established by the department.
Exhaust Systems: Whistle-Tip Prohibition
27150.3. (a) A person may not modify the exhaust
system of a motor vehicle with a whistle-tip.
Modification of Exhaust Systems: Sound Level in
Compliance
27151. (a) No person shall modify the exhaust system of
a motor vehicle in a manner which will amplify or increase
the noise emitted by the motor of the vehicle so that the
vehicle is not in compliance with the provisions of Section
27150 or exceeds the noise limits established for the type of
vehicle in Article 2.5 (commencing with Section 27200). No
person shall operate a motor vehicle with an exhaust system
so modified.
(b) For the purposes of exhaust systems installed on motor
vehicles with a manufacturer's gross vehicle weight rating of
less than 6,000 pounds, other than motorcycles, a sound level
of 95 dbA or less, when tested in accordance with Society of
Automotive Engineers Standard J1169 May 1998, complies
with this section. Motor vehicle exhaust systems or parts
thereof include, but are not limited to, nonoriginal exhaust
equipment.
Television
27602. (a) A person may not drive a motor vehicle if a
television receiver, a video monitor, or a television or video
screen, or any other, similar means of visually displaying a
television broadcast or video signal that produces
entertainment or business applications, is operating and is
located in the motor vehicle at any point forward of the back
of the driver’s seat, or is operating and visible to the driver
while driving the motor vehicle.
(b) Subdivision (a) does not apply to the following
equipment when installed in a vehicle:
(1) A vehicle information display.
(2) A global positioning display.
(3) A mapping display.
Jamming: Electronic Speed-Measuring Devices
28150. (a) No vehicle shall be equipped with any device
that is designed for, or is capable of, jamming, scrambling,
neutralizing, disabling, or otherwise interfering with radar,
laser, or any other electronic device used by a law
enforcement agency to measure the speed of moving objects.
Tint on front and side windows:
(mods if this is the wrong section please move)
Modification of Vehicles
24008. It is unlawful to operate any passenger vehicle, or
commercial vehicle under 6,000 pounds, which has been
modified from the original design so that any portion of the
vehicle, other than the wheels, has less clearance from the
surface of a level roadway than the clearance between the
roadway and the lowermost portion of any rim of any wheel
in contact with the roadway.
Mounting Height
24254. Whenever requirement is declared as to the
mounted height of lamps or reflectors, the height shall be
measured from the center of the lamp or reflector to the level
surface upon which the vehicle stands when it is without a
load.
Headlamps on Motor Vehicles
24400. (a) A motor vehicle, other than a motorcycle,
shall be:
(1) ( ) 1 Equipped with at least two ( ) 2 headlamps, with
at least one on each side of the front of the vehicle, and, except
as to vehicles registered prior to January 1, 1930, they shall
be located directly above or in advance of the front axle of the
vehicle. The headlamps and every light source in any
headlamp unit shall be located at a height of not more than
54 inches nor less than 22 inches.
Foglamps
24403. (a) A motor vehicle may be equipped with not
more than two foglamps that may be used with, but may not
be used in substitution of, headlamps.
(b) On a motor vehicle other than a motorcycle, the
foglamps authorized under this section shall be mounted on
the front at a height of not less than 12 inches nor more than
30 inches and aimed so that when the vehicle is not loaded
none of the high-intensity portion of the light to the left of the
center of the vehicle projects higher than a level of four inches
below the level of the center of the lamp from which it comes,
for a distance of 25 feet in front of the vehicle.
Taillamps
24600.
(e) Taillamps shall be red in color and shall be plainly
visible from all distances within 500 feet to the rear except
that taillamps on vehicles manufactured after January 1,
1969, shall be plainly visible from all distances within 1,000
feet to the rear.
License Plate Lamp
24601. Either the taillamp or a separate lamp shall be so
constructed and placed as to illuminate with a white light the
rear license plate during darkness and render it clearly
legible from a distance of 50 feet to the rear. When the rear
license plate is illuminated by a lamp other than a required
taillamp, the two lamps shall be turned on or off only by the
same control switch at all times.
Backup Lamps
24606.
(b) Backup lamps shall be so directed as to project a white
light illuminating the highway to the rear of the vehicle for a
distance not to exceed 75 feet. A backup lamp may project
incidental red, amber, or white light through reflectors or
lenses that are adjacent or close to, or a part of, the lamp
assembly.
Turn Signal Lamps
24953. (a) Any turn signal system used to give a signal
of intention to turn right or left shall project a flashing white
or amber light visible to the front and a flashing red or amber
light visible to the rear.
Flashing Lights
25250. Flashing lights are prohibited on vehicles except
as otherwise permitted.
To sum up what flashing lights are permitted; Hazard lights, Blinkers, Emergency Vehicles, Tow Trucks, School Busses, and Funeral Processions.
Colors of Lamps and Reflectors
25950.
(2) The color of foglamps described in Section 24403 may
be in the color spectrum from white to yellow.
Sirens
27002. No vehicle, except an authorized emergency
vehicle, shall be equipped with, nor shall any person use upon
a vehicle any siren except that an authorized emergency
vehicle shall be equipped with a siren meeting requirements
established by the department.
Exhaust Systems: Whistle-Tip Prohibition
27150.3. (a) A person may not modify the exhaust
system of a motor vehicle with a whistle-tip.
Modification of Exhaust Systems: Sound Level in
Compliance
27151. (a) No person shall modify the exhaust system of
a motor vehicle in a manner which will amplify or increase
the noise emitted by the motor of the vehicle so that the
vehicle is not in compliance with the provisions of Section
27150 or exceeds the noise limits established for the type of
vehicle in Article 2.5 (commencing with Section 27200). No
person shall operate a motor vehicle with an exhaust system
so modified.
(b) For the purposes of exhaust systems installed on motor
vehicles with a manufacturer's gross vehicle weight rating of
less than 6,000 pounds, other than motorcycles, a sound level
of 95 dbA or less, when tested in accordance with Society of
Automotive Engineers Standard J1169 May 1998, complies
with this section. Motor vehicle exhaust systems or parts
thereof include, but are not limited to, nonoriginal exhaust
equipment.
Television
27602. (a) A person may not drive a motor vehicle if a
television receiver, a video monitor, or a television or video
screen, or any other, similar means of visually displaying a
television broadcast or video signal that produces
entertainment or business applications, is operating and is
located in the motor vehicle at any point forward of the back
of the driver’s seat, or is operating and visible to the driver
while driving the motor vehicle.
(b) Subdivision (a) does not apply to the following
equipment when installed in a vehicle:
(1) A vehicle information display.
(2) A global positioning display.
(3) A mapping display.
Jamming: Electronic Speed-Measuring Devices
28150. (a) No vehicle shall be equipped with any device
that is designed for, or is capable of, jamming, scrambling,
neutralizing, disabling, or otherwise interfering with radar,
laser, or any other electronic device used by a law
enforcement agency to measure the speed of moving objects.
Tint on front and side windows:
