A tank car is a type of railroad car designed specifically for transporting liquids and gases. These cars are built with a cylindrical tank mounted on a flatcar, allowing them to carry a variety of substances, including chemicals, petroleum products, and food-grade liquids. The design ensures that the contents are securely contained and minimizes the risk of spills during transit. Tank cars come in different sizes and configurations, depending on the type of material being transported. They are equipped with safety features such as pressure relief valves and protective shields to prevent accidents. The use of tank cars is essential in the logistics of industries like petroleum, chemicals, and food processing.