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Reference.org
Class U special wagon
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<p>The <a href="/facts/International_Union_of_Railways/oSlgdIJk">International Union of Railways</a> groups all special classes of railway <a href="/facts/Goods_wagon/oxjBJWdX">goods wagon</a> (less those in classes F, H, L, S or Z) into Class U in its <a href="/facts/UIC_classification_of_goods_wagons/FHr7UteQ">goods wagon classification system</a>. </p><p>These are: </p> <ul><li>Bulk goods wagons for transporting powders, etc.</li> <li><a href="/facts/Dual_coupling/kYtthHYJ">Dual coupling</a> wagons for joining wagons with different coupling systems</li> <li><a href="/facts/Barrier_vehicle/HGj1zhAk">Barrier vehicles</a> for joining wagons with different coupling systems</li> <li>Well wagons, including low-deck wagons and <a href="/facts/Schnabel_car/3WYJd6lh">Schnabel wagons</a></li> <li><a href="/facts/Self-discharging_wagon/kotBjw5B">Self-discharging</a> hoppers with loading hatches</li> <li>Trials vehicles for <a href="/facts/Roadrailer/AgIkn9VQ">RoadRailer</a> and Kombirail systems for <a href="/facts/Intermodal_freight_transport/CrPgyURe">intermodal transport</a>.</li></ul> <p>Between 1964 and 1979 bulk goods wagons for liquid and gaseous materials (<a href="/facts/Tank_wagon/ozApKzlM">tank wagons</a>) were included in Class U before being reclassified in 1980 as Class Z. </p>