also known as tank wagons or tanker wagons. In the United Kingdom tank wagons were traditionally four-wheel vehicles. Some long-wheelbase four-wheelers are still in use but bogie vehicles are now used as well. Specialized applications DOT-111 The DOT-111 tank car, which is designed to carry liquids such as denatured fuel ethanol, is built to a US standard. The design has been criticized on safety grounds. The train in the Lac-Mégantic derailment of 2013 was made up of 72 of these cars. DOT-112 DOT-112 tank cars are used in North America to carry pressurized gases. One of these tank cars exploded in Waverley, TN, killing 16, when a Louisville & Nashville train derailed. While the clean up efforts were under way, the tank car, UTLX 83013, ended up exploding from a BLEVE. DOT-114 DOT-114 tank cars are used in North America to carry pressurized gases. Milk cars A milk car is a specialized type of tank car designed to carry raw milk between farms, creameries, and processing plants. Milk is now commonly chilled, before loading, and transported in a glass-lined tank car. Such tank cars are often placarded as "Food service use only". Liquid hydrogen tank car Tank cars of this type are designed to carry cryogenic liquid Hydrogen (LH2). North American cars are classified as DOT113, AAR204W, and AAR204XT Pickle cars A pickle car was a specialized type of tank car designed to carry pickles. This car consisted of several wooden or metal vats (typically three or four) and was often roofed. Pickles which are preserved in salt brine were loaded through hatches in the roof. Tank containers A tank container, also known as ISO tank, is a specialized type of container designed to carry bulk liquids, such as chemicals, liquid hydrogen, gases and food grade products. Both hazardous and non hazardous products can be shipped in tank containers. A standard tank container is long, high and wide. The tank, which is made from stainless steel, is held within a box-shaped frame with the same shape as an intermodal container. This allows it to be carried on multiple modes of transport, such as truck, rail and ship. Torpedo wagons A torpedo car or bottle car is a type of railroad car used in steel mills to haul molten pig iron from the blast furnace to begin the process of primary steelmaking. The thermally-insulated vessel is mounted on trunnions, and designed