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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

A Generic Work Zone Evaluation Tool Driven by a Macroscopic Traffic Simulation Model

This study proposed a generic work zone evaluation tool driven by a dynamic macroscopic traffic model. The tool can investigate the effects of a work zone on freeway conditions. The classical freeway … [Read more...] about A Generic Work Zone Evaluation Tool Driven by a Macroscopic Traffic Simulation Model

Traffic Organization Scheme Design of Freeway Work Zone

With the development of the economy, some freeways have been overloaded by vehicles and need to be reconstructed or expanded. In addition, some freeways have been damaged and maintenance work is … [Read more...] about Traffic Organization Scheme Design of Freeway Work Zone

Deterministic and Stochastic Capacity in Work Zones: Findings From a Long-Term Work Zone

This paper describes the development of a breakdown probability model for a long-term work zone in a suburban area. It was found that the Gompertz distribution best describes the breakdown probability … [Read more...] about Deterministic and Stochastic Capacity in Work Zones: Findings From a Long-Term Work Zone

Development of Breakdown Probability Models and Heavy Vehicle Passenger Car Equivalents for Rural Freeway Work Zones

With nearly nine million lane-miles of public roadway and an economy driven by the automobile, interruptions to normal traffic operations for construction and maintenance are inevitable in the U.S.A., … [Read more...] about Development of Breakdown Probability Models and Heavy Vehicle Passenger Car Equivalents for Rural Freeway Work Zones

Probabilistic Speed–Flow Models in Highway Construction Work Zones

Since variations in exogenous factors could cause unpredictable fluctuations/variability of the speed–flow relationship, the aim of this study was to develop probabilistic speed–flow relationships in … [Read more...] about Probabilistic Speed–Flow Models in Highway Construction Work Zones

A Comparison of Capacity Estimation Methods for Two-Way Four-Lane Freeway Work Zone Capacity Using Field Data

Work zone environments are complex, and adequate capacity estimation methods must consider more factors than regular freeway sections. In order to avoid the undue influences on the traffic capacity … [Read more...] about A Comparison of Capacity Estimation Methods for Two-Way Four-Lane Freeway Work Zone Capacity Using Field Data

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