You don't have to be taught to every individual condition ! You have to be taught to learn how to recognise hazards and drive so that you can stop in the distance that you know to be clear !!!
People learn by experience, he clearly failed to allow for conditions, but as an inexperienced driver he will not have gained that knowledge (notorious for deer!?) for himself. But he probably knew that he was driving beyond his capabilities in order to prevent a fine!
I detest these things and this is a prime example of why !
If his speed was 57mph when he crashed then one might guess that he was going faster and he had already braked or been braking. Perhaps if he had been on a skid course he might have been able to control the skid !
Perhaps Rebecca ought to be calling for a ban on the black boxes!
I know I state whenever I can that they have no place in anyone's car. Just appalled and saddened that he felt he had to take this bad risk and miscalculated. The fault is not with the speed allowance but this awful system teaching exactly the wrong things.