20 MPH speed limits, legal or not?

[Avocet]

I'm getting to the stage where, if the rules were applied to everyone (e.g. technical application that didn't leave it down to individual choice) it wouldn't bother me if vehicles were speed limited and forced to stay x distance apart dependent on speed. Muppets darting about right left and centre, often too quickly for the surroundings they're in. Folk tailgating whether intentional or otherwise.

The unfortunate thing at present is, it's down to the individual if they want to comply or not ... and many don't. So yeah, technical enforcement (for all) wouldn't bother me now. It's coming anyway, albeit gradually.

It is likely to come, in the form of autonomous vehicles. Personally, I think that will be a sad day, but I don't expect it will be in my driving lifetime. Elements of it (the technology is already here to limit speed to whatever the prevailing limit is) will come sooner on new cars, but the distance keeping, needs more work.