Hong Kong Regulations

ROAD TRAFFIC (CONSTRUCTION AND MAINTENANCE OF VEHICLES) REGULATIONS - REGULATION 10

Power to weight ratio

(1) Subject to paragraph (2), every motor vehicle first registered after the
coming into operation of this regulation which is propelled by a
compression-ignition engine shall be so constructed that the power that the
engine produces is at least 4.4 kilowatts for every 1000 kilograms of the
permitted gross vehicle weight of the vehicle.

(2) Every motor vehicle to which paragraph (1) applies shall, where it is
fitted with ancillary equipment designed for use or likely to be used when the
vehicle is in motion on a road at a speed in excess of 8 kilometres per hour
and the power absorbed by that equipment is provided by the engine propelling
the vehicle, be so constructed that, when the ancillary equipment is being
used, the power of the engine remaining available to drive the vehicle is at
least 4.4 kilowatts for every 1000 kilograms of the permitted gross vehicle
weight of the vehicle.

(3) For the purposes of this regulation, "ancillary equipment" (輔助裝 備)
means machinery or apparatus forming part of a vehicle or mounted thereon,
used for purposes not connected with the driving of the vehicle.

"ancillary equipment" (輔助裝備)