A bulk liquid container is loaded onto a flatbed trailer using skids and mountings, then physically removed from the vehicle at the destination for unloading at a separate facility. Which definition applies to this container?

49 CFR 171.8 (Cargo tank; Portable tank definitions)

Cargo tanks and portable tanks face different construction, testing, and marking specifications under different sections of Part 178, so correctly identifying which kind of bulk container a driver is hauling affects which inspection and documentation rules apply to that equipment.