polarized license plate covers

bmet2000 wrote:
Those that say don't beat them, must not know the physics behind the red light cameras. Especially the ones on a left turn lane. When they install the cameras and shorten the yellow light time, you can't stop in time.
http://redlightrobber.com/red/scam.html

It was my understanding that there is a minimum yellow light duration spec'd by the Feds.
Have not looked it up, but I recall it is something like 1 second per 10mph of the speed limit.
Several jurisdictions have been forced to refund fines when it was proved the yellow time was below standard.