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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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Highway Capacity

Method for Estimating Capacity and Measures of Effectiveness of Two-Lane Highway Work Zones

The present study proposes a method for determining the capacity and measures of effectiveness of two-lane highway work zones. Therefore, a deterministic mathematical formulation was developed based … [Read more...] about Method for Estimating Capacity and Measures of Effectiveness of Two-Lane Highway Work Zones

Calibration and Validation of a Microsimulation Model of Lane Closures on a Two-Lane Highway Work Zone

Lane closure on a two-lane work zone can negatively affect operational performance. Although a microsimulation model is often used to quantify and predict these negative impacts, it requires proper … [Read more...] about Calibration and Validation of a Microsimulation Model of Lane Closures on a Two-Lane Highway Work Zone

Issues With Work Zone Free Flow Speed Computation in 6th Edition HCM and Proposed Improvements

Free flow speed (FFS) and capacity of work zones (WZ) directly affect queue length and delay in the WZ. The 6th Edition of Highway Capacity Manual introduced a new model to estimate WZ FFS and … [Read more...] about Issues With Work Zone Free Flow Speed Computation in 6th Edition HCM and Proposed Improvements

Issues With Work Zone Free Flow Speed Computation in 6th Edition HCM and Proposed Improvements

Free flow speed (FFS) and capacity of work zones (WZ) directly affect queue length and delay in the WZ. The 6th Edition of Highway Capacity Manual introduced a new model to estimate WZ FFS and … [Read more...] about Issues With Work Zone Free Flow Speed Computation in 6th Edition HCM and Proposed Improvements

Estimating Construction Work Zones Capacity Using Deep Neural Network

Construction work zones are a major cause of traffic disruptions and delays on roadways. Thus, accurate estimation of traffic states within work zones would be beneficial to both road users and … [Read more...] about Estimating Construction Work Zones Capacity Using Deep Neural Network

Improving Work Zone Mobility Through Planning, Design, and Operations

This research project consists of a series of tasks intended to yield results that will better inform transportation agencies in their planning, design, and operations of freeway work zones. This … [Read more...] about Improving Work Zone Mobility Through Planning, Design, and Operations

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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