| Vehicle contributory factor | Severity of accident | Total |
| Fatal |
Serious |
Slight |
| Inadequate or no lights |
0 |
1 |
5 |
6 |
| Tyre blown out before impact |
0 |
6 |
12 |
18 |
| Defective body work |
2 |
6 |
11 |
19 |
| Defective steering |
0 |
1 |
1 |
2 |
| Defective brake |
1 |
27 |
54 |
82 |
| Defective lights: front |
0 |
1 |
0 |
1 |
| Defective lights: rear |
0 |
0 |
0 |
0 |
| Defective lights: brake |
0 |
0 |
0 |
0 |
| Defective lights: indicator |
0 |
0 |
0 |
0 |
| Defective vision: glass |
0 |
0 |
1 |
1 |
| Defective vision: windscreen wiper |
0 |
0 |
0 |
0 |
| Defective vision: rear view mirror |
0 |
0 |
0 |
0 |
| Defective suspension: front or rear |
0 |
2 |
5 |
7 |
| Defective load: insecure |
0 |
2 |
1 |
3 |
| Defective load: apparent overload |
0 |
2 |
2 |
4 |
| Defective load: dangerous projection |
0 |
0 |
1 |
1 |
| Defective or illegal tyre |
0 |
5 |
11 |
16 |
| Broken down with hazard warning lights unlit |
0 |
1 |
8 |
9 |
| Vehicle not attended by driver rolling down |
0 |
2 |
3 |
5 |
| Unidentified vehicle (hit-and-run) |
0 |
14 |
67 |
81 |
| Other vehicle factor |
12 |
80 |
323 |
415 |