vehicle weight or unladen weight as specified in S.2(21) of the Act. The provision of S.3 of the Act requires that a person in order to drive a ‘transport vehicle’, must have authorization. Once a licence is issued to drive light motor vehicle, it would also mean specific authorization to drive a transport vehicle or omnibus, the gross vehicle weight or motor car, road roller or tractor, the unladen weight of which, as the case may be, does not exceed 7500 kg. The insertion of ‘transport vehicle’ category in S.10(2)(e) has no effect of obliterating the already defined category of transport vehicles of the class of light motor vehicle. A distinction is made in the Act of heavy goods vehicle, heavy passenger motor vehicle, Medium goods vehicle and medium passenger motor vehicle on the basis of ‘gross vehicle weight’ or ‘unladen weight’ for heavy passenger motor vehicle, heavy goods vehicle, the weight, as the case may be, exceed 12000 kg. Medium goods vehicle shall mean any goods carriage other than a light motor vehicle or a heavy vehicle; whereas ‘medium passenger motor vehicle’ means any public service vehicle or private service vehicle or educational institution bus other than a motorcycle, invalid carriage, light motor vehicle or heavy passenger motor vehicle.”