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Data Needs for Tree Removal Crash Modification Factors on Arizona State Highways

ContributorsMonsere, Christopher Michael (Publisher) / Arizona. Department of Transportation. Research Center (Issuing body) / Arizona. Department of Transportation (Issuing body) / Cambridge Systematics (Publisher) / United States. Department of Transportation (Contributor) / United States. Federal Highway Administration (Contributor)
Created2016-07
Description
The Arizona Department of Transportation (ADOT) Roadway Departure Safety Implementation Plan (RDSIP) has identified tree removal as a feasible countermeasure to reduce roadway departure crash frequency or severity. Previous ADOT work has identified locations for tree removal, and activities to conduct this work are underway. To test the safety effectiveness…

The Arizona Department of Transportation (ADOT) Roadway Departure Safety Implementation Plan (RDSIP) has identified tree removal as a feasible countermeasure to reduce roadway departure crash frequency or severity. Previous ADOT work has identified locations for tree removal, and activities to conduct this work are underway. To test the safety effectiveness of removing the trees, ADOT intends to conduct statistically rigorous before-after safety effectiveness analysis to estimate state-specific crash modification factors (CMFs).