@Steve 13 Re: Concentration
"automatic, unconscious competence is the highest level"
Yes, but that is *not* what the majority of road users have. They do things automatically right up until the point that something goes wrong, then they slam on the brakes or swerve or freeze up in panic because their skills are only good enough to let them cope with every day situations.
What they do *not* do is use good observation and planning to see a situation *before* it develops. They're mostly just watching the back of the car in front or giving a casual glance in their mirror if and when they think about it rather than considering what other vehicles may be doing.
Remember that the Driving Test only ensures that someone has the *bare minimum* of skills to be allowed out on the road in charge of a vehicle and once you've passed that Test you will almost never need to demonstrate that your skills are still up to scratch.
Unfortunately when youy couple that with being under the influence of alcohol (even if not above the legal limit) or being distracted by using a mobile phone on the move, what you get is a recipie for disaster...