So true re bicycles, it really requires a culture that looks at biking as a part of a system that only works with rules. In San Francisco, bicyclists have a reputation as anarchists and biking as a form of rebellion. Go 100 miles west to UC Davis, completely different. Since biking is so prevalent, it is rule based. People stay in bike lanes and obey traffic signals. You have to register and get a license. And YES, you can get tickets. My high school buddy learned the hard way when he got a ticket for . . . wait for it . . . not having mud flaps on his tires. Yep required by Uni and Muni code, and many newbs get caught by the law and the natural consequences. In fact, they have a term, the "freshman stripe" for the strip of mud and dirty water that freshmen get on their first trip after the rain starts.