What is the purpose of an MC 306/DOT 406 tank carrier?

The purpose of an MC 306/DOT 406 tank carrier is specifically designed for the transportation of bulk liquid materials, particularly those that are not under pressure. These tankers are typically used to carry flammable and non-flammable liquids, including fuels, chemicals, and other liquids that have a vapor pressure of less than 35 psi. This design allows them to safely transport materials that require specific pressure and temperature conditions during transit.

This type of tank carrier is equipped with specialized features, including a rounded configuration to help dissipate stress during transportation, which enhances safety when dealing with liquids at lower pressures. Additionally, the construction materials and safety equipment are tailored for the types of substances they carry, focusing on preventing leaks and maintaining containment.

The other options do not accurately describe the function of an MC 306/DOT 406 tank carrier. While it can indeed transport flammable liquids, it is not restricted solely to that category, nor is it designed for transporting pressurized gases or solid mineral products.