Singapore legislation
Regulation 74
of Road Traffic (Motor Vehicles, Construction and Use) Rules
Regulation 74
Body
Subregulation 1
The body of a vehicle shall be securely fixed to the chassis.
Subregulation 2
Every trap door in the floor of the vehicle shall be strong and so fitted or fastened that it cannot become dislodged by vibration.
Subregulation 3
No lifting device fitted to the trap door shall project above the level of the floor.