Major Contributory Factors of Road Traffic Accidents 2011
| Contributory Factor | |
| Contributory Factor - Driver | No. of Drivers |
| Driving inattentively | 3,487 |
| Driving too close to vehicle in front | 1,567 |
| Lost control of vehicle | 1,330 |
| Careless lane changing | 995 |
| Careless cycling | 900 |
| Contributory Factor - Casualty (Driver, Passenger or Pedestrian) | No. of Casualties |
| Passenger lost balance, elsewhere except on stairway of bus | 519 |
| Crossing road heedless of traffic (elsewhere) | 518 |
| Pedestrian inattentiveness | 476 |
| Crossing road heedless of traffic (at crossing) | 330 |
| Lost balance/fell down when boarding/alighting vehicle | 248 |
| Contributory Factor - Vehicles | No. of Vehicles |
| Mechanical defect | 71 |
| Unidentified vehicle (hit-and-run) | 61 |
| Broken down with hazard warning lights unlit | 11 |
| Defective or illegal tyre | 9 |
| Tyre blown out before impact | 6 |
| Defective load : apparent overloading | 6 |
| Contributory Factor - Accident Environment | No. of Accidents |
| Slippery road (not related to weather) | 97 |
| Slippery road (caused by weather) | 83 |
| Object or animal on road | 53 |
| Inadequate light/sign at road work | 48 |
| Pedestrian negligence | 47 |
