Matching Items (4)
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- All Subjects: Traffic safety
- All Subjects: Roads
- Creators: Arizona. Department of Transportation. Research Center
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 of removing the trees, ADOT intends to conduct statistically rigorous before-after safety effectiveness analysis to estimate state-specific crash modification factors (CMFs).
ContributorsArizona. Department of Transportation. Research Center (Issuing body) / Arizona. Department of Transportation (Issuing body) / Sonoma Technology Inc. (Contributor) / Western Transportation Institute (Contributor) / Partners in Brainstorms, Inc. (Publisher) / United States. Department of Transportation (Contributor) / United States. Federal Highway Administration (Contributor)
Created2015-05
Description
Windblown dust events occur in Arizona, and blowing dust has been considered a contributing factor to serious crashes on ... Arizona roadways.... [T]he Arizona Department of Transportation (ADOT) acquires information about predicted or in-progress dust events through National Weather Service forecasts and advisories and through field reports from motorists and ADOT personnel. ADOT then communicates this information to the public.... During this project, researchers developed a set of recommendations that ADOT can implement to identify the most effective means for acquiring data about windblown dust events, communicating ... to the public, and influencing driver behavior....--Page v.
ContributorsArizona. Department of Transportation. Research Center (Issuing body)
Created2015-05
ContributorsLeahy, Rita (Author) / Arizona. Department of Transportation. Research Center (Sponsor)
Created2014-09
Description
The objective of this study was to evaluate the effect of typical chemical winter maintenance practices on Arizona Department of Transportation pavements. A review of previous studies on the effect of deicing/anti‐icing chemicals did not yield definitive recommendations, especially for DIAICs typically used by ADOT. Researchers conducted a laboratory study evaluating the effects of magnesium chloride, potassium chloride, sodium chloride, and distilled water on eight different open‐graded rubber‐modified asphalt concrete mixes using the boiling test. All experimental factors were found to be statistically significant, and the researchers provide recommendations on which DIAICs should be used for different binder and aggregate types.