Which tank is associated with a capacity described in gallons rather than cubic feet?

• A. DOT 406 cargo tank
• B. Dry bulk cargo tank
• C. Inter-modal tube module
• D. IM-102 tank

Answer: (A)

Capacity expressed in gallons is typical for tanks that haul liquids, because gallons directly measure liquid volume for loading, unloading, and billing. The DOT 406 cargo tank is a low‑pressure liquid cargo tank, so its capacity is commonly stated in gallons (thousands of gallons) rather than cubic feet. Dry bulk cargo tanks, on the other hand, carry solids and usually have their capacity described in cubic feet (or bushels) since that measures the space available for bulk material. Inter-modal tube modules and IM‑102 tanks aren’t described by gallons in the same way for their rated capacities. Therefore, the tank associated with a capacity described in gallons is the DOT 406 cargo tank.