Compilation of Existing State Truck Size and Weight Limit Laws

Quarterly Reports Other Documents Final Report
 Contact FHWA for more information.

Primary Investigators

Ernie Perry
Researcher/Program Director, MAFC
University of Wisconsin-Madison


As a requirement of MAP-21 (PL 112-141) §32802, the Federal Highway Administration (FHWA) is required to develop a report for each state that “describes the route, size and weight limitation, allowable combination, and state law that allows a vehicle to operate in excess of the federal truck size and weight limits on the National Highway System.”


Verification of regulatory interpretation and applicability.


  1. Develop a list for each state that describes each NHS route that allows vehicles to operate in excess of federal truck size and weight limits.
  2. Provide a description of those size and weight limits in each state that allow for vehicles in excess of federal size and/or weight limits on NHS routes.
  3. Provide a description of the allowable vehicle combinations operating or that could operate above federal limits.

Project Information

  • Duration: 5 months
  • Dates: 3/11/2014–8/5/2014
  • Budget: $25,764 (match funds)
  • Student Involvement: One undergraduate
  • Modal Orientation: Highway
  • Project ID: CFIRE 09-03
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