Vehicles comprising a large number of such closures as valves, stopcocks, manhole covers, flanges and the like must be designed so as to keep the number of Customs seals to a minimum.
Les véhicules comportant un nombre important de fermetures telles que vannes, robinets, trous d'homme, flasques, etc., seront aménagés de manière à limiter, autant que possible, le nombre des scellements douaniers.