Crackdown on Beach Speeders

I disagree with that. It should not be up to drivers to decide whether they can drive dangerously or not. Many drivers, particularly women (not paying full attention) and old people (slow reaction time), though some men as well, are not capable of driving safely even at the speed limit.

This is not true and is basically discrimination. Individual ability varies greatly across superficial criteria like this, and the determining factor should of course be ability. NB a huge number of collisions are caused by younger drivers. Would you want to discriminate against them, too, on the grounds of lack of experience?

Might sound a bit draconian, but I believe anyone over the age of 70 should not be allowed to drive, at all. We, the taxpayers, should provide taxies instead.

Unworkable and discriminatory.

Some of your other suggestions are being/have been discussed, but by no means go to the root of the problem. That lies in spatial planning, economic circumstances, popularly accepted standards of behaviour, etc. It's a lot more complex than simple 'solutions' can ever address.