Copied from another forum where I moderate the "Truck Audio" section.

Lately, I'm seeing people (not just on here) who want to bypass critical safety features that are built into their equipment.

What you have to understand about this subject is that it is a very sensitive one for me, probably more so than other people, so here's so education for those of you who are thinking about bypassing certain features...

DigitalTips: State Laws

Quote Originally Posted by California Vehicle Code

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.
(4) A visual display used to enhance or supplement the driver's
view forward, behind, or to the sides of a motor vehicle for the
purpose of maneuvering the vehicle.
(5) A television receiver, video monitor, television or video
screen, or any other, similar means of visually displaying a
television broadcast or video signal, if that equipment has an
interlock device that, when the motor vehicle is driven, disables the
equipment for all uses except as a visual display as described in
paragraphs (1) to (4), inclusive.
Quote Originally Posted by Federal Law

SENATE BILL 209


SENATE AUTHOR: Carona

EFFECTIVE: 9-1-03


HOUSE SPONSOR: Davis, Yvonne

Senate Bill 209 amends the Transportation Code to add digital video disc players and videocassette players to the devices that can be used in a motor vehicle only if the equipment is located so that the video screen is not visible from the operator's seat. The list of exceptions to this provision is expanded to include equipment that is used exclusively for monitoring the performance of equipment installed on a vehicle used for safety purposes in connection with the operations of a natural gas, water, or electric utility.
I also want you to know that it is a $50,000 fine for the shop for bypassing the built-in safety features in these devices.

So, you have been warned. I've done the research so you don't have to.

In conclusion, don't try and bypass the safety features. They are there for your safety and more importantly the safety of those around you.

Matt