not really related to the OP directly,
but there is a scheme in place to reduce the amount of serious injury from RTA’s, its focus is on drivers who just creep over the limit, and educating them.
it is working, many more people are walking around today that would not have been before the enforcement and education of this large body of drivers, of course we all have done it sometime.
30 and 20 mph speed limits are going to be enforced rigidly in the future, but its easy to avoid getting pulled up. 😉
sorry for the dull vid about residual speed.