In Taiwan, scooterists from the right routinely pass stopped buses. This is a hazard for disembarking passengers, and they are often hit or brushed back by the bikes. There are warnings on buses to look out for these nuts. Here's a sign (above) on the Taipei MRT also alerting commuters to simply look out: "Getting off the bus? Please pay attention to the right-hand side for coming traffic!"
Taipei Police are cracking down on scooterists driving on sidewalks. Yes, it is illegal to drive your scooter on a sidewalk in this city as the sidewalks are meant for pedestrians, not traffic. If you're one of those inclined to parking on a sidewalk, the rule of thumb is to get off and push your scooter (motorcycle). This seems to be catching on, though yesterday someone on a scooter cruising down a stretch of sidewalk near the Fushing and Chungshiao MRT Station did still honk at me from behind to clear aside.