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FHWA Highway Safety Programs

USLIMITS2 - Technical Support

If you experience any technical difficulties while using this program, find any bugs, or have suggestions for improving USLIMITS2, please send an email to help@uslimits.org.

FHWA also offers FREE technical assistance to State and local agencies that are interested in learning more about using USLIMITS2. This includes answering questions, providing in-person workshops, providing virtual workshops held via web conference, and giving presentations about USLIMITS2. To request technical assistance, send an email to help@uslimits.org.

Please also review the following documents for more information about using USLIMITS2:

  • User Guide; – provides background information and detailed instruction for using the USLIMTS2 web-based tool.
  • Decision Rules – flowcharts of the decision logic used in determining the recommended speed limit.
  • NCHRP 3-67 Project Report – documents the research conducted to develop version 2 of USLIMITS2.
  • Frequently Asked Questions – frequently asked questions for version 2 of USLIMITS2.
Last updated: Monday, September 28, 2020