Section 17 Vehicles, aircraft, vessels and associated transport equipment 86 Railway or tramway locomotives, rolling-stock and parts thereof; railway or tramway track fixtures and fittings and parts thereof; mechanical (incl. electro-mechanical) traffic signalling equipment of all kinds 86 04 Railway or tramway maintenance or service vehicles, whether or not self-propelled (for example, workshops, cranes, ballast tampers, trackliners, testing coaches and track inspection vehicles) Commodity Code Description 86 04 00 Railway or tramway maintenance or service vehicles, whether or not selfpropelled (for example, workshops, cranes, ballast tampers, trackliners, testing coaches and track inspection vehicles).