Helmets, bells, lights...
Around here it feels like bike regulations are designed to make it worth the cop's time. I know folks who have had to pay multiple fines for running through a STOP sign or, in one case, after being hit by a car. Helmet, bell, rear-view mirror and lights (not in daytime, thankfully) are worth a fine in excess of 100$ each. Cops are too busy to worry much about bikes. Twice in the past 10 years they were given short term directives to enforce bike laws. They became very aggressive in catching people for a couple of weeks. Last summer there was a radar campaign to catch bikes going above the 20kmh speed limit in a nearby park. They made a killing on that one!