"I often wonder these days with so much technology, why stop lights cannot be better set-up to deal with the flow."
Because you can't violate the laws of physics. Traffic light timing is always a compromise. You have a fixed set of geometrics to deal with, mainly distance between lights and the speed of the vehicles. If you could just focus on one car, you could run him anywhere without hitting a red light - to the detriment of all the other traffic. Smarter computers can only tweak things a little.
This traffic light changer does not emit a visible beam, so you would not ever get caught.
It is also very small:
http://www.sportsimportsltd.com/misttrlich.html