What is the catchment range for new (inexperienced) drivers? 18-25? There are a lot of people who have been driving for a long time who are not good at driving

What is the catchment range for new (inexperienced) drivers? 18-25? There are a lot of people who have been driving for a long time who are not good at driving at all and lack all kind of self awareness. For example, following the car in front too close.