7.—(1) The unladen weight of a Class 1 or Class 2 invalid carriage shall not exceed 113.4 kilograms.
(2) The unladen weight of a Class 3 invalid carriage shall not exceed 150 kilograms.
(3) In this regulation, “unladen weight” means the weight of the invalid carriage inclusive of the weight of water, fuel or accumulators used for the purpose of the supply of power for its propulsion and of loose tools, but exclusive of the weight of any other load or of a person carried by the invalid carriage.