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..... 86 04 00 Railway or tramway maintenance or service vehicles, whether or not self-propelled 86 04 00 00 Railway or tramway maintenance or service vehicles, whether or not self-propelled Commodity Code Description 86 04 00 00 000 Railway or tramway maintenance or service vehicles, whether or not self-propelled