The seemingly random nature of cycling laws does add confusion. My folks live in WI and my dad likes to rant about the tourons (seriously, some of these tourists are morons, whether on a bike, driving, walking, etc. Stopping in the middle of a busy street to take photos is asking for trouble) riding 2 abreast. But I looked online and found that this is perfectly legal in their state. It would make sense if driving and cycling laws were the same from state-to-state.