It's interesting to note that a common refrain you hear is "Bikes are the worst offenders! I see bikes running red lights all the time". If you pair it with thi

It's interesting to note that a common refrain you hear is "Bikes are the worst offenders! I see bikes running red lights all the time". If you pair it with this report, you might think your anecdotal experience doesn't jive with this report. As a biker, I would have to agree with the car drivers, a high % of bikers blatantly (and unsafely) break road rules; a much higher percentage than cars. I'd estimate it at 20-30% in SF. Does this mean the law should be focused on bikers? No, here's why: 1) the laws should be focused on # of bad actors. There are more significantly more drivers than bikers on the road meaning: Probability(driving unsafely | biker) > probability(driving unsafely | driver) BUT Number(bikers biking unsafely) <<< Number(drivers driving unsafely) 2) Even excluding the frequency of each mode of transportation, the risk profile is completely different. A car is a 1 ton fast moving object capable of killing 10s of people (see the London attacks). A bike is much less deadly. The legal constraints should follow the risk profile of the mode of transportation (which is also why truckers have much stricter rules and penalties while driving) 3) If you do a damage assessment (i.e # of biker deaths caused by bad drivers vs vice versa) you will see the numbers are way way higher on the driver side. So from a public policy perspective it makes sense to focus on the drivers. That being said, I think public policy should have some focus on the bikers. I think humans expect some sense of fairness in their legal systems and when car drivers don't see rules fairly applied, you get road rage directed at pedestrians and bikers. So I'd applaud: * Stricter enforcement of ticketing on bikers who fail to signal before turns, do not slow at busy intersections, running red lights, unsafely lane splitting , etc. I've seen so many bikers do this and it's so unsafe. * Education requirements for BOTH drivers and bikers for getting a state id / drivers license