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Design policies for sight distance at stop-controlled intersections based on gap acceptance
Institution:1. Midwest Research Institute, 425 Volker Blvd, Kansas City, MO 64110-2299, USA;2. Pennsylvania State University, University Park, PA, USA;3. Texas Transportation Institute, College Station, TX, USA;1. School of Mechanical, Electronic and Control Engineering, Beijing Jiaotong University, Beijing 100044, China;2. Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, China;1. Faculty of Engineering, King Mongkut’s Institute of Technology Ladkrabang, Bangkok 10520, Thailand;2. Faculty of Industrial Education, King Mongkut’s Institute of Technology Ladkrabang, Bangkok 10520, Thailand;3. Space Weather and Environment Informatics Laboratory, National Institute of Information and Communications Technology, Nukuikita, Koganei, Tokyo 184-8795, Japan;1. School of Environment Science and Spatial Informatics, China University of Mining & Technology, Xuzhou, Jiangsu, PR China;2. School of Geosciences and Info-physics, Central South University, Changsha, Hunan, PR China;3. IoT/Perception Mine Research Centre, China University of Mining and Technology, Xuzhou, Jiangsu, PR China
Abstract:The current AASHTO policy for sight distance at stop-controlled intersections is based on a model of the acceleration performance of a minor-road vehicle turning left or right onto a major road and the deceleration performance of the following major-road vehicle. This paper develops and quantifies an alternative intersection sight distance model based on gap acceptance. The paper describes field studies that were performed to determine the critical gaps appropriate for use in sight distance design. It is recommended that the sight distance along the major road for a passenger car at a stop-controlled intersection be based on a distance equal to 7.5 s of travel time at the design speed of the major road. Longer sight distances are recommended for minor-road approaches that have sufficient truck volumes to warrant consideration of a truck as the design vehicle. ©
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