Passenger-kilometre is a transport performance unit for the accumulated transport distance of people where one passenger-kilometre equals the transport distance of 1 km for one person.
Ton-kilometre is a transport performance unit for the accumulated transport distance of goods where one ton-kilometre equals the transport distance of 1 km for one ton of goods.
Vehicle-kilometre is a transport performance unit for the accumulated transport distance of the used vehicles themselves where one vehicle-kilometre equals the transport distance of 1 km for one vehicle.
Ontology