(1) Failure to keep reasonably to the left. (2) Driving unreasonably slow. (3) Erratic speed. (4) Erratic course. (5) Failure to use rear view mirror frequently. (6) Exceeds speed limit. (7) Following to closely. (8) Overtaking incorrectly. (9) Over centre of road when not necessary. (10) mounting or brushing the kerb.