Tank truck

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Tank trucks are large road vehicles designed to haul liquids or gases. They can be insulated or not, pressurized or not, and may carry one liquid or multiple liquids in separate compartments. Some are semi-trailers.

Big trucks usually carry 21,000 to 44,000 liters (5,500–11,600 US gallons). In Australia, longer road trains can move well over 120,000 liters. Smaller local tankers can be under 11,000 liters. The tanks are usually horizontal cylinders and often have internal baffles to stop the liquid from sloshing, which helps prevent instability and rollover.

Tank trucks are made from materials such as aluminum, carbon steel, stainless steel, or fibre-reinforced plastic, chosen for the liquid they carry. They can be built to carry different products in separate compartments in one trip. Common uses include transporting gasoline, diesel, LPG, milk, water, juices, molasses, wine, and other liquids, as well as special duties like fueling aircraft or servicing septic tanks with vacuum trucks.