United States Department of Transportation
i
Limited Analysis of the Wyoming Department of Transportation Connected Vehicle Pilot Safety Applications
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2022-06-01
[PDF-1.24 MB]
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Edition:Final Report
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Abstract:This report presents the results of a limited analysis of the safety applications deployed in the Wyoming Department of Transportation Connected Vehicle Pilot site. This deployment included the vehicle-to-vehicle forward collision warning (FCW) application and three vehicle-to-infrastructure (V2I) applications that provided advisories, roadside warnings, and travel guidance to drivers traveling along Interstate 80. Situational awareness, work zone warning, and spot weather impact warning comprised the V2I applications. This analysis was based on the naturalistic driving experience of 327 equipped vehicles, spanning from January through April 2022. The deployed vehicles experienced 490 distinct FCW events and received 83,408 weather condition alerts, 34,962 speed limit alerts, 7,077 work zone alerts, and 3,069 traffic condition alerts. The analysis of FCW events characterized the host vehicle (HV) speed at alert onset and vehicle response to alerts in terms of driving conflict mitigation, response time, and deceleration level. The analysis of V2I advisory alerts focused on the HV speed at alert onset and did not address vehicle response to these alerts. Finally, this analysis compared the speed of all vehicles passing by 64 roadside radars along I-80, between a baseline period from January through April 2017 and the treatment period from January through April 2022.
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