The difficult part of the UK driving test is doing exactly that modelling loop. I agree with you. It's not about responding to an emergency - yes the loop would

The difficult part of the UK driving test is doing exactly that modelling loop. I agree with you. It's not about responding to an emergency - yes the loop would be too slow for that. It's about foreseeing the emergency before it happens. Looking ahead further down the road for things that could turn into hazards that should be prepared for ahead of time. It's credited with reducing the accident rate, though I'm not entirely sure how they worked that out.