Road weight limits for container haulage
The axle and gross combination limits that cap what may legally be packed in a container for its road leg, in the European Union and the United States.
Road law, not the container rating, usually sets the ceiling on a door-to-door container move. In the European Union, Council Directive 96/53/EC as amended by Directive (EU) 2015/719 caps international traffic at 40 tonnes, rising to 42 tonnes for a two-axle motor vehicle with a three-axle semi-trailer and 44 tonnes for a three-axle motor vehicle with a two-axle or three-axle semi-trailer, in each case only in an intermodal operation carrying units up to 45 feet. In the United States the Interstate limits are 80,000 lb gross, 20,000 lb on a single axle and 34,000 lb on a tandem, subject to the bridge formula.
The gap between those limits and a container plate rating is large. A US five-axle combination leaves roughly 19 tonnes of cargo in a 20 ft box against a 30,480 kg plate, so a container packed to its rating cannot lawfully leave the terminal on a standard chassis.
The full article will cover the EU directive and its intermodal derogations, the Article 10c length relief for 45 ft units, the US statutory limits and the bridge formula with its axle-group definitions, permits for nondivisible loads, and the practical remedies when a box is packed above the road limit. The payload arithmetic is in CBM and chargeable weight .