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:
- Full Report:
Contact:
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.
Sep 30, 2020
Supplemental Material For GAO-20-686:
Transit Asset Management: Survey of TAM Program ParticipantsGAO-20-687SP: Published: Sep 30, 2020. Publicly Released: Sep 30, 2020.-
Transit Asset Management:
FTA Should Clarify Performance Data and Develop a Plan to Guide Future Program ImprovementsGAO-20-686: Published: Sep 30, 2020. Publicly Released: Sep 30, 2020.
Sep 8, 2020
-
Airport Funding:
Information on Grandfathered Revenue Diversion and Potential Implications of RepealGAO-20-684: Published: Sep 8, 2020. Publicly Released: Sep 8, 2020. -
Aviation Sanitation:
FDA Could Better Communicate with Airlines to Encourage Voluntary Construction Inspections of Aircraft Galleys and LavatoriesGAO-20-612: Published: Sep 8, 2020. Publicly Released: Sep 8, 2020.
Sep 2, 2020
-
Facial Recognition:
CBP and TSA are Taking Steps to Implement Programs, but CBP Should Address Privacy and System Performance IssuesGAO-20-568: Published: Sep 2, 2020. Publicly Released: Sep 2, 2020.
Aug 20, 2020
-
Aircraft Noise:
Information on a Potential Mandated Transition to Quieter AirplanesGAO-20-661: Published: Aug 20, 2020. Publicly Released: Aug 20, 2020.
Aug 18, 2020
-
Aviation Safety:
Actions Needed to Evaluate Changes to FAA's Enforcement Policy on Safety StandardsGAO-20-642: Published: Aug 18, 2020. Publicly Released: Aug 18, 2020.
Aug 10, 2020
-
Transportation Research:
Additional Actions Could Improve DOT's Internal Collaboration and Reliability of Information on Research ActivitiesGAO-20-622: Published: Aug 10, 2020. Publicly Released: Aug 10, 2020.
Jul 27, 2020
-
Surface Transportation Security:
TSA Has Taken Steps to Improve its Surface Inspector Program, but Lacks Performance TargetsGAO-20-558: Published: Jul 27, 2020. Publicly Released: Jul 27, 2020.
Jul 16, 2020
-
Capital Investment Grants Program:
FTA Should Improve the Effectiveness and Transparency of Its ReviewsGAO-20-512: Published: Jul 16, 2020. Publicly Released: Jul 16, 2020.
Looking for more? Browse all our products here
Explore our Key Issues on Transportation
Explore our other Key Issues here
