“…In P-Drive, 20 items (for a complete overview of the items/actions covered in P-Drive, see (28)) are scored using a criterion-referenced rating, based on the quality of performance on a scale from 4 to 1, where 4 0competent driving action, 30questionable driving action, 2 0problematic driving action, and 1 0incompetent driving action. In a recent study (14), cut-off values for P-Drive were determined using an on-road evaluation as criterion. Cut-off for passing was set at 1.8 logits (log-odds probability units), and below 1.4 logits was considered failing, indicating driving disability.…”