Hong Kong Regulations

ROAD TRAFFIC (CONSTRUCTION AND MAINTENANCE OF VEHICLES) REGULATIONS - REGULATION 13

Variation of wheel load

(1) Subject to paragraph (2), every motor vehicle, trailer having more than 4
wheels and trailer having more than 2 wheels being part of an
articulated vehicle shall be provided with such compensating arrangement as
will ensure that all the wheels will remain in contact with the road surface
and under the most adverse conditions will not be subject to abnormal
variations of load.

(2) Paragraph (1) shall not apply-

   (a)  to any steerable wheel of a motor vehicle if the load on such wheel
        does not exceed 3.5 tonnes; and

   (b)  with respect to any properly constructed retractable axle while in the
        retracted position.