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!
we’ve got a new cycle lane with dedicated lights near me - though only activated by a beg-button.
except you can press the button sall you want ant it’ll stay on red all the time.
unfortunately due to the concrete separator i can’t nip over into the main lane and use that lane on green.
so i just have to run the red. almost every bike trip i make is lawbreaking for me.
I break laws cycling almost daily. While infrastructure is fairly good in my country, there still are a lot of dangerous points. Breaking the law is necessary to get to your destination safely.