Longer Combination Vehicles:

Potential Infrastructure Impacts, Productivity Benefits, and Safety Concerns

T-RCED-94-306: Published: Sep 14, 1994. Publicly Released: Sep 14, 1994.

Additional Materials:


Office of Public Affairs
(202) 512-4800

GAO discussed the safety and economic impacts of longer combination vehicles (LCV) operations. GAO noted that: (1) expanded LCV use would increase infrastructure maintenance costs by up to $20.2 billion and would have the greatest impact on bridges, interchanges, and staging areas; (2) infrastructure maintenance costs could be limited by selecting LCV routes away from major population centers, but benefits would also be reduced; (3) nationwide LCV use could reduce transportation costs by about 3 percent and would benefit most large companies that consolidate shipments; (4) LCV are less stable than single-trailer trucks which makes them a greater safety risk on congested highways; (5) states have limited data and inspection programs to monitor LCV operations and may not recognize emerging problems; and (6) the Federal Highway Administration should include LCV driver qualifications in its motor carrier safety regulations.

Oct 3, 2018

Sep 13, 2018

Sep 5, 2018

Jul 30, 2018

Jul 26, 2018

Jul 19, 2018

Jul 12, 2018

May 31, 2018

May 29, 2018

May 24, 2018

Looking for more? Browse all our products here