Analysis of Work Zone Crash Characteristics and Countermeasures (2018) / Chapter Skim
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NCHRP Project 17-61 iv LIST OF TABLES Table 1. Summary of Crash Causes Directly Related to Work Zone Presence ...........................................
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NCHRP Project 17-61 1 SUMMARY In this report, researchers have documented the results of multiple analyses focused on developing an improved understanding of work zone crash characteristics and countermeasure effectiveness. In-depth analyses of work zone crash narratives and other data sources above and beyond standard fields and codes in state and national crash databases yielded several useful insights into work zone factors associated with common types of crashes.
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NCHRP Project 17-61 2 was the lack of sufficient variability in these features across the projects available for analysis. There was considerable confounding of many of these features (e.g., reduced lane and shoulder widths together with barrier placed at the edge of the shoulder, etc.)
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