Abstract
The concept of a young problem driver sub-group, that is, a sub-group who operate at a (substantially) higher than average crash risk and therefore contribute disproportionately to young driver crashes is often proposed. This report presents a literature review and mass crash data analyses and proposes a conceptual framework comprising crash risk, crash frequencies, crash countermeasures and countermeasure priorities to assist (policy) discussion of this issue. On the basis of information presented, it was concluded that action designed to focus specific attention on young problem drivers should be accorded low priority relative to the development and implementation of other young driver safety initiatives. (A)