I did a bit of searching not to much avail and all I could find was this
http://www.driving.ca/victoria/joke+cars+still+legal/1444808/story.html
Which in turn may be the reason I couldn't find anything concrete about it. It seems that if they were to ban TVA from the front seat they would also have to ban reversing monitors? If any one can find anything about it post a link I would like to know for sure. Btw sc resident
You have to hunt down the laws of your state, but generally it is illegal to have video displayed within the driver's field of view -- the exception being
GPS and other "car related navigational equipment".
Reverse cameras fall into navigational equipment, and (usually) only are supposed to work when the car is in reverse gear.
In-dash DVD head units are supposed to only play when the car is set in park. Its common to rewire them so that they think the car is in park all the time, allowing them to play video when the car is in motion. Mine is hacked this way, but it came from the factory set up so that it could not display video while the car is in motion. Some head units have accelerometers in them to make them harder to hack. Stereo manufacturers do not want the liability.
If a police officer sees a video playing in the front seat while you drive by, you will be pulled over. Happens quite a lot these days. The screen is esp. easy to spot at night...
Also, something to think about... if this screen is visible out the back of your car (and if its on the visor, it is) consider also the content you are broadcasting to the cars behind you. I read a story recently about a guy who got arrested because he had Pron playing in such a way that minors could see it as they passed by...
Note: I modified mine so that I could put movies on the screen for the kids on long drives... I have little interest in watching movies and driving at the same time! The screen is usually a GPS...