United States Department of Transportation
i
Operational and Safety Analysis with Mitigation Strategies for Freeway Truck Traffic in Wyoming [Research Brief]
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2019-08-01
[PDF-417.27 KB]
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Abstract:Challenging roadway characteristics and high truck percentages create operational and safety concerns on I-80 in WY. High crash frequencies and delays are observed every year. WYDOT is looking for potential mitigation strategies to alleviate those problems. Researchers performed operational and safety analyses along I-80, with a focus on high truck percentages and climbing lanes as the most promising countermeasures for steep vertical grades. The operational analysis was performed through microsimulation and a creation of shock-wave based models, while the safety analysis included descriptive statistics, and cross-sectional and propensity-scores models to estimate the safety effectiveness of climbing lanes.
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