Unclear what you traffic scenario you are referring to, but in some localities (such as WA state) it is legal for bikes to roll through stop signs in certain scenarios. This makes sense considering a bike’s speed, its rider’s engagement, and the overall difficulty of killing a pedestrian with a bike (compared to a vehicle).

The difference is of course that cyclists mostly endanger themselves where as cars mostly endanger others.

Cars and bikes behave differently, that’s not surprising. If you spend any time in traffic you will see many cars speeding and leaving enough space.

Now do one for speed limit compliance.