FedEx thinks they have a chance of getting twin 33 foot trailers approved un President trump. Twin 33’s have been tested in Florida where drivers say they are more stable. Generally speaking Less-than-Truckload [LTL] shipping uses floor space for pallets and shipments have gotten bulkier. The floor space increases by 18% vs. the currently used twin 28 foot trucks. Productivity and less trucks on the road are the main arguments made by those in favor of twin 33’s.
Naturally there are opponents to the increase in overall trailer length. The Truckload Carriers Association voiced its disapproval saying twin 33’s would give the LTL carriers too much of an advantage. They also pointed out that rail carriers are now equipped to accommodate the 28 foot variant and would have to retool to handle 33 footers. This they said would have the net effect of actually adding trucks to the highways.
If these changes are adopted and LTL carriers gain efficiency, expect to see more rigorous competition in at least medium haul lanes.