Longer Combination Trucks Are Only Permitted on Some Routes
July 4, 2016
Although all states allow the conventional combinations consisting of two 28-foot semi-trailers, only 14 states and six state turnpike authorities allow longer combination vehicles (LCVs) on some parts of their road networks. LCVs are tractors pulling a semi-trailer and trailer, with at least one—the semi-trailer, the trailer, or both—longer than 28 feet. The routes that these LCVs can travel have not changed since 1991.
Longer Combination Truck Routes by State
Note
Empty triples are allowed on I-80 in Nebraska.
Source
Oak Ridge National Laboratory, 2015 Vehicle Technologies Market Report, ORNL/TM-2016/124, April 2016, Figure 149.