A truck tractor-semitrailer combination of vehicles carrying manifested international freight as the only load of the vehicle in a sealed, seagoing container on a semitrailer is deemed to be carrying an indivisible load if: The vehicle does not exceed the following maximum gross vehicle weight or axle weight limits: 22,400 pounds on a single axle; 44,000 pounds on 2 consecutive axles at least 4 feet apart; or 90,000 pounds gross vehicle weight; and The maximum allowable gross weight limit is 80,000 pounds for a 20-foot container loaded on a 20-foot intermodal chassis, 90,000 pounds for a 20-foot container loaded on a 40-foot or longer intermodal chassis, and 90,000 pounds for a 40-foot container, provided that the: Vehicle is being operated only on the routes specified under Regulation .04 of this chapter, and other routes approved by the Unit and described in the permit; Vehicle is being operated in compliance with the permit issued under these regulations; and Original permit issued to the appropriate permittee is being carried in the vehicle.