Every time there's a bike story on HN, there's always a long side thread about bicycles not stopping at lights, going the wrong way down one way streets, etc et

Every time there's a bike story on HN, there's always a long side thread about bicycles not stopping at lights, going the wrong way down one way streets, etc etc, so I'm curious what happens in a place with mature infrastructure. Pretty much the same things. Even as a cyclist I am amazed what other cyclists pull off wrt. to violating traffic rules. But I think the difference is that most car drivers are or were also cyclists and the law favors cyclists, so car drivers tend to pay attention at intersections.