Sea transport 1 transport Sea transport (including wagons, motor vehicles, trailers, semi-trailers and lighters on board of a ship) Rail transport 2 transport Railway transport (including lorries on railway wagons) Road transport 3 transport Road transport Air transport 4 transport Air transport Postal consignment 5 transport Postal consignments Fixed transport installations 7 transport Fixed transport installations (e.g. pipelines, high-tension cables) Inland waterway transport 8 transport Inland waterway transport Own propulsion 9 transport Own propulsion (imported or exported means of transport crossing the border under their own power, e.g. aircraft, lorries, boats, etc.)