DOT 406/306 containers are made of:**

DOT 406/306 containers are made of:**

• A. Aluminum or steel
• B. Plastic
• C. Glass
• D. Wood

Answer: (A)

These container types are non-pressurized highway tanks, built with metal shells to provide the strength and durability needed for transporting hazardous liquids. Aluminum or steel are specified because they can withstand the stresses of road transport, resist corrosion from common hazmats, and meet regulatory standards for containment. Aluminum offers a lighter weight and good corrosion resistance, while steel provides maximum strength and often lower cost. Plastic, glass, or wood do not meet the required durability and chemical-compatibility needs for these large hazmat tanks, so they aren’t used for DOT 406/306 containers.

These container types are non-pressurized highway tanks, built with metal shells to provide the strength and durability needed for transporting hazardous liquids. Aluminum or steel are specified because they can withstand the stresses of road transport, resist corrosion from common hazmats, and meet regulatory standards for containment. Aluminum offers a lighter weight and good corrosion resistance, while steel provides maximum strength and often lower cost. Plastic, glass, or wood do not meet the required durability and chemical-compatibility needs for these large hazmat tanks, so they aren’t used for DOT 406/306 containers.