Oil tanker trucks are heavy - duty vehicles specifically designed for the transportation of crude oil, refined petroleum products, and other oil - based substances over long distances. These trucks feature large - capacity tanks, often made from steel or stainless steel, which are engineered to withstand the pressures and corrosive effects associated with oil transportation. Safety is a paramount concern, with features such as double - walled tanks, emergency shut - off valves, and sophisticated leak - detection systems integrated into the design. Oil tanker trucks are also equipped with powerful pumping systems and secure loading/unloading mechanisms to facilitate the efficient transfer of oil at various points in the supply chain. Their robust construction and advanced safety features make them essential for the seamless movement of oil products, ensuring a continuous supply to meet the energy demands of industries and consumers worldwide.