• Skip to primary navigation
  • Skip to main content
Logo

Work Zone Safety Information Clearinghouse

Library of Resources to Improve Roadway Work Zone Safety for All Roadway Users

  • About
  • Join Listserv
  • Contact
  • Twitter
  • Facebook
  • LinkedIn
  • Work Zone Data
    • At a Glance
    • National & State Traffic Data
    • Work Zone Traffic Crash Trends and Statistics
    • Worker Fatalities and Injuries at Road Construction Sites
  • Topics of Interest
    • Commercial Motor Vehicle Safety
    • Smart Work Zones
    • Transportation Management Plans
    • Accommodating Pedestrians
    • Worker Safety and Welfare
    • Project Coordination in Work Zones
  • Training
    • Flagger
    • Online Courses
    • Toolboxes
    • FHWA Safety Grant Products
    • Certification and
      Accreditation
  • Work Zone Devices
  • Laws, Standards & Policies
    • COVID-19 Guidance
  • Public Awareness
  • Events
  • About
  • Listserv
  • Contact
  • Search
Practice

Work zone impact thresholds

New Jersey does not use a maximum queue length threshold to determine allowable lane closure hours. During design, the state calculates expected delay length, time, and dollar costs based on the existing traffic counts and proposed work zone capacities. Allowable daytime, nighttime, and weekend lane closure hours are determined based on this information. The allowable lane closure hours become part of the contract documents.
The state uses the calculated dollar costs as a threshold for increasing mitigating strategy measures, regardless of the environment (e.g., urban, rural, arterials, etc.).
Increased traffic mitigation strategies are implemented as appropriate using the related road user costs as a guide. New Jersey DOT has a Road User Cost Manual, available at the given website, which addresses this in more detail.
Allowable lane closure periods are strictly enforced by resident engineers, with a zero tolerance policy. Liquidated damages are charged for any lane closure overruns.

State/Agency: New Jersey
Website: Link to URL
Topics: Lane Closure; Traffic Delays

Copyright © 2023 American Road & Transportation Builders Association (ARTBA). The National Work Zone Safety Information Clearinghouse is a project of the ARTBA Transportation Development Foundation. It is operated in cooperation with the U.S. Federal Highway Administration and Texas A&M Transportation Institute. | Copyright Statement · Privacy Policy · Disclaimer
American Road and Transportation Builders Association Transportation Development Foundation, American Road and Transportation Builders Association U.S. Department of Transportation Federal Highway Administration Texas A&M Transportation Institute