Which trailer design is primarily used for transporting flammable liquids?

The trailer design that is primarily used for transporting flammable liquids is known as the MC406. This type of trailer is specifically designed for carrying hazardous materials, especially flammable liquids. It features a reinforced structure with integrity to withstand the pressure of the contents while ensuring safe transport.

The MC406 trailers are built to comply with regulations for transporting substances like gasoline and other flammable liquids. They typically have a round shape, which helps in distributing the stress of the contents evenly throughout the trailer and provides better strength than square or rectangular designs. Additionally, MC406 trailers usually have specific features such as baffles, which help to stabilize the liquid load and minimize the risk of sloshing during transportation.

In contrast, trailers like MC307 are suitable for transporting non-flammable liquids, while MC331 and MC338 are designed for gases and cryogenic liquids, respectively. Each type has its own set of engineering principles tailored to the properties of the materials they carry, which is why understanding the purpose of each design is crucial for safe transportation of hazardous materials.