Section 17 VEHICLES, AIRCRAFT, VESSELS AND ASSOCIATED TRANSPORT EQUIPMENT 86 Railway or tramway locamotives, rolling-stock and parts thereof; railwayor tramway track fixtures and fittings and parts thereof; mechanicalmechanical (including electro-mechanical) traffric signalling equipmen 86 04 RAILWAY OR TRAMWAY MAINTENANCE OR SERVICE VEHICLES Commodity Code Description 86 04 00 Railway or tramway maintenance or service vehicles, whether or not self-propelle