[lenlorijn]

You say this as if cars adhere to the rules given at all times. The difference is that bikes do it at their own peril and cars do it at the peril of others. Give cyclists good infrastructure separate from cars and they'll use it.

[WalterBright]

I rarely see cars leave their lane.

The bike lanes around here are wide, clear, and dry. There is no excuse.

They don't even glance back over their shoulder before veering into the car lane. That's pretty perilous.

[lenlorijn]

I'm sorry but anecdotal evidence is barely any evidence at all. I could list a very large number of news reports of cars ramming in to houses an businesses, which I can promise you are not built in a lane. Bike lanes and car lanes should be physically separated, sure for bikes to not veer out of lane, but more importantly to keep cars in theirs. In any of these situations cars are still the ones bringing a 1.5k bundle of glass and steel to the fight. Just take a quick look at https://x.com/WorldBollard for numerous examples of cars going all over the place and making a mess of it.