My most frustrating commutes (in the US) are when I get unlucky enough to share a two-lane road with a peloton of bicycle commuters. All the cars slow down and

My most frustrating commutes (in the US) are when I get unlucky enough to share a two-lane road with a peloton of bicycle commuters. All the cars slow down and move over a lane to pass them, which slows down traffic enough that you get stopped at every traffic light. The bikes lane-split at full speed through the stopped cars and the red signal, which means you're playing hopscotch with them for miles and traveling at half the speed of a normal day. If they bothered to obey the traffic laws, on the other hand, it wouldn't be a big deal -- you slow down, pass the slower vehicle, and move on.