HAHAHAHA, I wonder that too. But running stop signs and traffic lights in a car is illegal, and accidents are caused by that all the time. Speeding, while illegal, is a bit less of a hazard, depending on how far over the car is going of course and driver skill, then running signs and lights. I only speed 10 over on highways, speeding 10 over in residential areas is just plain stupid, I never go over the speed limit in residential areas and in fact in dense residential areas I'm doing 5 under because you never know when some kid you didn't see will jump out of somewhere, and I have enough things on my conscious without adding that to it!

The time I got a ticket for speeding on my bike I was doing 10 over in a school zone! A radar cop got me, I pleaded to the cop I didn't know because I have no speedometer, he didn't care, but it was dismissed in court.