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Pedestrian Facilities Capacity and Level of Service at Intersections in a Connected and Autonomous Vehicle Environment

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Document pages: 16 pages

Abstract: It is inevitable that Connected andAutonomous Vehicles (CAVs) will be a major focus of transportation and theautomotive industry with increased use in future traffic system analysis.Numerous studies have focused on the evaluation and potential development ofCAVs technology; however, pedestrians and bicyclists, as two essential andimportant modes of the road users have seen little to no coverage. In responseto the need for analyzing the impact of CAVs on non-motorized transportation,this paper develops a new model for the evaluation of the Level of Service(LOS) for pedestrians in a CAVs environment based on the Highway CapacityManual (HCM). The HCM provides a methodology to assess the level of service forpedestrians and bicyclists on various types of intersections in urban areas.Five scenarios were created for simulation via VISSIM (a software) thatcorresponds to the different proportions of the CAVs and different signalsystems in a typical traffic environment. Alternatively, the Surrogate SafetyAssessment Model (SSAM) was selected for analyzing the safety performance ofthe five scenarios. Through computing and analyzing the results of simulationand SSAM, the latter portion of this paper focuses on the development of a newmodel forevaluating pedestrian LOS in urban areas which are based upon HCM standardswhich are suitable for CAVs environments. The results of this study areintended to inform the future efforts of engineers and or policymakers and toprovide them with a tool to conduct a comparison of capacity and LOS related tothe impact of CAVs on pedestrians during the process of a transportation systemtransition to CAVs.

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