Singapore legislation
Regulation 71
of Road Traffic (Motor Vehicles, Construction and Use) Rules
Regulation 71
Exhaust pipe
Subregulation 1
The exhaust pipe of a vehicle shall be so fitted or shielded —
(a)
that no inflammable material can fall or be thrown upon the pipe from any other part of the vehicle; and
(b)
that it is not likely to cause a fire through proximity to any inflammable material on the vehicle.
Subregulation 2
The outlet of the exhaust pipe shall be either at the rear or on the off-side and far enough to the rear to prevent, so far as practicable, fumes from entering the vehicle.