But the UK just released that 85% of drivers exceed 20 limits - particularly in roads that were not designed and don’t “feel” like 20 mph roads.

These reductions in speed limits are primarily political, while corruptly funneling money to overpriced contractors and police running deceptive speed traps. They serve to give brownie points to the people patting themselves on the back for doing it, meanwhile they do nothing to actually make the road work properly. They’ll just slap a new sign on and paint some lines which flow worse than a 6 year old’s scribble.

police running deceptive speed traps.

Here's the thing with speed traps.

Turns out that after people have been fined a few times, they suddenly do feel that 20mph roads are 20mph roads.

Almost as if they knew the road was 20mph all along, but decided to ignore the clearly marked speed limit (and often the speed limit warning on their satnav) because they hadn't faced any consequences for it before.

I have seen documented evidence many times that enforcement does NOT alter people’s behaviour in a way that persists after enforcement ceases. They simply adapt to the enforcement level, whatever that happens to be. I don’t think that enforcement is a reasonable component of street safety. We can’t have street daddies on every corner keeping us safe.