I particularly liked this comment:
"Also try to remember that these traffic signals and stop signs are only necessary because most people drive cars. No volume of pedestrians or bicycles warrant a traffic signal or stop sign. So it is difficult for some people to obey laws that are only necessary so people can drive cars."
Yes and no. In America, with the numbers of pedestrians and cyclists, there are not enough of them to cause enough traffic that would require traffic signals specifically for them. But, in places like Copenhagen, that has a third of all traffic being cycles, it is reasonable to expect that some management is necessary.
Oh, to dream that day might come here.
Another line of comments mirrored what was in the book "Traffic" that it was something about being in a car and the design of the roads that made one more prone to violate the law. It's not just "jerks whether being on a bike or in a car" but "something about being safely encased within 2 tons of hurtling steel."