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Work Zone Safety Information Clearinghouse

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

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Work Zone Capacity

Work Zone Simulation Model: Companion Report for “Traffic Management Strategies for Merge Areas in Rural Interstate Work Zones”

To support the analysis of driver behavior at rural freeway work zone lane closure merge points, CTRE staff collected traffic data at merge areas using video image processing technologies. The … [Read more...] about Work Zone Simulation Model: Companion Report for “Traffic Management Strategies for Merge Areas in Rural Interstate Work Zones”

Capacity for North Carolina Freeway Work Zones

Work zone capacity values for rural and urban freeways without continuous frontage roads were defined and determined. Data were collected using Nu-Metrics counters and classifiers at 24 work zones in … [Read more...] about Capacity for North Carolina Freeway Work Zones

Updated Capacity Values for Short-Term Freeway Work Zone Lane Closures

Recommendations on estimating the capacities of short-term freeway work zone lane closures are presented. The recommendations are based on 45 hr of capacity counts at 33 work zones in Texas between … [Read more...] about Updated Capacity Values for Short-Term Freeway Work Zone Lane Closures

Determining Capacity and Selecting Appropriate Type of Control at One-Lane Two-Way Construction Sites

The problem of determining the most appropriate type of traffic control at one-lane two-way construction sites (i.e., on two-lane two-way roadways where one lane is temporarily closed for repairs and … [Read more...] about Determining Capacity and Selecting Appropriate Type of Control at One-Lane Two-Way Construction Sites

Traffic Capacity Through Urban Freeway Work Zones in Texas

Findings of capacity studies conducted at urban freeway maintenance and construction work zones in Houston and Dallas are summarized. Studies were conducted on five-, four-, and three-lane freeway … [Read more...] about Traffic Capacity Through Urban Freeway Work Zones in Texas

Field Evaluation of Traffic Management Strategies for Maintenance Operations in Freeway Middle Lanes

This paper presents results of field studies conducted in Houston, Texas, to evaluate the performance of two innovative approaches for managing traffic during maintenance operations in the middle lane … [Read more...] about Field Evaluation of Traffic Management Strategies for Maintenance Operations in Freeway Middle Lanes

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Copyright © 2025 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