Statistics published today by the U.K. Department for Transport (DfT) show that in 2022 85% of the car drivers in Great Britain broke the law by driving faster than the speed limit in 20mph zones. On roads with a 30mph maximum, 50% of car drivers broke the law, reveals the annual DfT report on speed limit compliance.
The measurements are based on speed data from a sample of Automatic Traffic Counters (ATCs) around the country. These exclude locations where external factors might restrict driver behavior, such as at junctions, on hills, beside sharp bends or where speed cameras are visible, says the DfT report.
I am comparing the liability issue and how responsible people react. There is a huge problem with liability claims and costs. People in charge of money need to show they have done due diligence. You are right that some will never obey the rules, but that comes under an SEP (somebody else's problem). It will no longer be the problem of a council.