| Type of injuring agent | Number | Percentage (%) |
| Motorcycle against motorcycle | 10 | 37.1 |
| Motorcycle against motor vehicle | 5 | 18.5 |
| punch | 5 | 18.5 |
| kick | 3 | 11.1 |
| Motocycle against a tree | 1 | 3.7 |
| Motorcycle handlebars | 1 | 3.7 |
| plank | 1 | 3.7 |
| Steering wheel | 1 | 3.7 |
| Total | 27 | 100 |