Section 17 Vehicles, aircraft, vessels and associated transport equipment 87 Vehicles others than railway or tramway rolling-stock, and parts and accessories thereof 87 16 Trailers and semi-trailers; other vehicles, not machanically propelled,..... 87 16 31 Tanker trailers and tanker semi-trailers Commodity Code Description 87 16 31 00 Tanker trailers and tanker semi-trailers