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Turner-Fairbank Highway Research Center

 
 
 
 
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Risk Factors Affecting Crash Injury Severity by Work Zone Area

Product Type

Other Publication

Author

Krupanidhi Koilada, Srinivas S Pulugurtha, and Ajinkya S Mane

Date

Jan-18

Abstract

Work zones include advance warning area, transition area, and activity area. The geometric, traffic control aspects, traffic operations, and driver’s maneuverability differ within each work zone area. Therefore, the risk of getting involved in a crash and factors associated with these crashes vary by work zone area. The focus of this research is to examine and identify factors that influence crash injury severity in these work zone areas. Five years (2010 – 2014) of crash data for the state of North Carolina was obtained from the Highway Safety Information Systems (HSIS) and used in this research. Four partial proportional odds models were developed using SAS, as the data was violating the parallel lines assumption. The results obtained indicate that the risk of getting involved in a work zone crash, in the transition area, is higher on roads with rigid and flexible post barrier medians. Further, the risk of getting involved in a work zone crash, in the activity area, is higher in extreme weather conditions, on roads with rigid and flexible post barrier medians, on roads with speed limit between 26 mph – 45 mph, on interstates and on US routes. However, the risk of getting involved in severe injury crashes in the advance warning area is higher on roads with flexible post barrier medians but lower on roads with semi – rigid post barrier medians. The findings from this research will assist the practitioners to take precautionary measures and reduce the risk of getting involved in a crash by implementing safety countermeasures in work zone areas.

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HSIS Summaries

HSIS Summary Reports are two to eight pages in length and include a brief description of the issue addressed, data used, methodology applied, significant results, and practical implications.

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Research Reports

A variety of research studies have been performed using data from HSIS. Many of the final reports prepared are now available electronically.

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Technical Summaries

Research reports are often summarized in executive summaries, technical briefs, or other abbreviated formats. Included here are those road safety summaries that involved research using HSIS data.

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Safety Analysis Tools

In addition to conducting research, HSIS resources are also used to develop products that can be used by practitioners in the analysis of safety problems.

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Other Projects

HSIS data are sometimes used in research studies that result in other types of finished products, such as dissertations, theses, and conference proceedings.

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