John S. Ferris wrote: My son has a car with blue neon lights under the car - a policeman told him these were illegal to use while driving...subject to a $150.00 fine.... I've read the Texas transportation code, but can't find where this was illegal... 547.305 , which I believe the policeman is referencing doesn't apply as these lights are not a "beacon, flashing or alternating light" and they are not more than 300 candlepower nor striking the roadway more than 75 feet from the vehicle. Can anyone tell me the statute that makes the use of these lights illegal...there probably is one, but I can't find it - but them, I'm no Clarence Darrow!

I cannot comment on Texas law, but in Virginia, they are illegal.
Basically, in VA., unless it is OEM equipment OR approved by the
superintendent of the State Police, you cannot install it on your car.