Singapore legislation
Regulation 10
of Road Traffic (Motor Vehicles, Construction and Use) Rules
Regulation 10
Variation of wheel load
Subregulation 1
Every motor vehicle or trailer with more than 4 wheels and every trailer being part of an articulated vehicle and having more than 2 wheels shall be provided with such compensating arrangement as shall ensure that all the wheels shall remain in contact with the road surface and under the most adverse conditions shall not be subjected to abnormal variations of load.
Subregulation 2
Nothing in paragraph (1) shall apply to any steerable wheel of a motor vehicle if the load on such wheel does not exceed 2.5 metric tons.