Evaluation of motorized two-wheeler rider responses towards jaywalking pedestrians through mockup control studies for urban streets |
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| Institution: | 1. Transportation Systems Engineering, Department of Civil Engineering, Indian Institute of Technology Hyderabad, Kandi, Medak 502285, India;2. Department of Civil and Construction Engineering, Swinburne University of Technology, Melbourne 3122, Australia;1. Institute of Transport Economics, Oslo, Norway;2. Department of Transportation Planning and Engineering, National Technical University of Athens, Greece;3. Bar Ilan University, Ramat Gan, Israel;1. Department of Civil and Coastal Engineering, University of Florida, 518C Weil Hall, Gainesville, FL 32611, United States;2. Department of Civil and Coastal Engineering, University of Florida, 511 Weil Hall, Gainesville, FL 32611, United States;3. University of Florida Transportation Institute, University of Florida, 512B Weil Hall, Gainesville, FL 32611, United States;4. Highway Systems, Institute for Transportation Research and Education (ITRE), North Carolina State University, Raleigh, NC 27695, United States;5. Department of Civil, Construction, and Environmental Engineering, University of Alabama at Birmingham, Birmingham, AL 35294, United States;1. School of Civil and Environmental Engineering, Nanyang Technological University, Singapore 639798, Singapore;2. Center for Infrastructure Systems, School of Civil and Environmental Engineering, Nanyang Technological University, Singapore;3. School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore;4. Research and Publication Division, Land Transport Authority, Singapore;1. Roma TRE University, Department of Engineering, via Vito Volterra n. 62, 00146 Rome, Italy;2. Universidad Politécnica de Madrid, Departamento de Ingeniería del Transporte, Territorio y Urbanismo C/Profesor Aranguren 3, 28040 Madrid, Spain;1. School of Engineering, Cochin University of Science and Technology, Kochi, 682022 Kerala, India;2. Division of Civil Engineering, School of Engineering, Cusat, Kochi 682022, India |
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| Abstract: | This study aims to model the motorized two-wheeler (MTW) riders’ evasive-action behavior towards jaywalking pedestrians using a mockup study. The brake reaction times (BRTs), approach speeds, decelerations, headings, and yaw rates were analyzed for two surprise scenarios (scenarios 1 and 3), one stationary scenario (scenario-2), and one expected scenario (scenario-4). In total, 50 riders participated in the mockup study. The results revealed that the 90th percentile BRT for the expected and surprise scenarios were 3.6 and 1.6 s, respectively. Further, repeated-measures ANOVA was performed followed by mixed effect modeling to ascertain the effect of conflict severity (two groups: group-1 with Time to Collision (TTC) < 1.5 s and group-2 with TTC > 1.5 s) and scenario type (three groups: scenarios 1, 3 and 4) on BRT. The results indicated that the main effects were significant while the interaction effect was not significant. The positive and significant coefficient (0.32) of TTC group-2 indicated higher BRTs than TTC group-1. Considering scenario-1 as the base scenario, the coefficient of scenario 3 (-0.02) indicated that scenario-1 and scenario-3 had a similar effect on BRT, while the coefficient of scenario-4 (1.47) indicated higher BRTs compared to scenario-1. The analysis of evasive action behavior revealed that 32% of riders performed hard braking in surprise scenarios. Further, yaw rate values at the crossing point indicated a loss of control of MTW in 90% of surprise events. The observations from this study provide a basis for developing countermeasures to improve pedestrian and MTW rider safety. |
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| Keywords: | Behavioral analysis Controlled study Motorized two-wheeler Pedestrian crossings Reaction times |
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