I think there is a specific problem with younger drivers, in that the 17-20 age group are the ones it costs a bomb to get insurance for because they're always bloody crashing, and governments always seem to be perplexed by this and constantly try and introduce new bits of legislation to do something about it, regardless of whether the thing they do is any use or not. There's probably alcohol involved in a certain number of accidents involving 17-20 year olds, so they say hey, let's ban it, and the only way I can see that leading to improved figures is because a certain number of young drivers who have had something to drink but not enough to actually affect their concentration will get caught out and taken off the road, while the younger drivers who get trollied and crash because they're young and think they're bulletproof will still get trollied and crash because they're young and think they're bulletproof. This is surely provable because it's not a limit being proposed for new drivers; why should someone who's 24 and just got their licence be magically more competent on the roads than a 17 year old? And yet they are; the insurance costs a lot less. So the logical thing to do is just raise the age people can get a driving licence at, but then there are bits of the UK where a car is the key to being able to get to work, so that really wouldn't help with youth unemployment, or with bringing about the sort of maturity and responsibility that leads to 24 year olds being much less likely to crash their car than 17 year olds...