Rearranging the deck chairs on the Titanic...
The real problem is that most people on the road have *no* idea how to drive properly.
They might know that the pedal on the right makes it go faster and there's another that makes it slow down, they might know that there's mirrors which let them look out for other road users and they may even know that there's flashing lights on each corner which tell other road users that they're going to turn or change lanes, but that's pretty much about it.
Unfortunately once someone has passed a test which says "You can drive" that is it, there is no compulsory requirement for them to subsequently demonstrate that they still can do more than just operate a vehicle.
Of course that's usually enough, until something unexpected happens and some poor sod is lying bleeding on the road, at which point the vehicle operator is thinking "OMG I didn't know that could happen, why didn't someone tell me?" which is, of course, too late.
Until Governments start requiring compulsory re-tests and encouraging people to do more than the most basic training, things are not going to improve.
Oh and insurance companies could help, I'm doing my IAM motorbike training, when I pass my insurers will give me a whole £15 off my insurance! (Pity that's less than the cost of a year's IAM membership...)