Some interesting stuff here, including links to more studies showing similar results in different countries.
The summary is that the reason motorists break more laws is that speeding is so common.
I don't think this is because motorists are all evil and cyclists are all saints. Probably, the reason motorists break speed limits is that it can be relatively difficult to keep cars below the speed limit. It's all too easy to absentmindedly speed up. It's also, perhaps becuase of this, widely seen as socially acceptable to break the speed limit (speaking anecdotally).
One interesting thing here, which may not surprise regular readers of Fuck Cars, is that better cycling infrastructure leads to less lawbreaking by cyclists. As is often the case, it's the design of roads and cities that changes behaviour, not abstract appeals to road users to be sensible!
@pjhenry1216 I think the key thing is better cycling infrastructure. Most people would do almost anything to avoid hitting someone with their car, but it still happens all too often because of poorly designed roads
That would cause the biggest impact, but in the meantime I wish car drivers were just better educated about the rules of the road when a bicycle is present. I’m not even sure which is the easier goal honestly. Maybe better infrastructure is easier even if more expensive. Easier to change a road than it is to change people.