Microscopic dynamic simulation model for pedestrian at signalized intersection
来源期刊：中南大学学报(英文版)2012年第11期
论文作者：LI Shan-shan(李珊珊) QIAN Da-lin(钱大琳) LUO Yi(罗艺)
文章页码：3351 - 3362
Key words：communication and transportation system; pedestrian simulation; social force model; decision making model; fundamental diagram; mixed traffic
Abstract: Pedestrian’s road-crossing model is the key part of micro-simulation for mixed traffic at signalized intersection. To reproduce the crossing behavior of pedestrians, the microscopic behaviors of the pedestrians passing through the crosswalk at signalized intersection were analyzed. A pedestrian’s decision making model based on gap acceptance theory was proposed. Based on the field data at three typical intersections in Beijing, China, the critical gaps and lags of pedestrians were calibrated. In addition, considering pedestrian’s required space, a modification of the social force model that consists of a self-deceleration mechanism prevents a simulated pedestrian from continuously pushing over other pedestrians, making the simulation more realistic. After the simple change, the modified social force model is able to reproduce the fundamental diagram of pedestrian flows for densities less than 3.5 m-2 as reported in the literature.
LI Shan-shan(李珊珊)1,2, QIAN Da-lin(钱大琳)1,2, LUO Yi(罗艺)1,2
(1. School of Traffic and Transportation, Beijing Jiaotong University, Beijing 100044, China;
2. Key Laboratory for Urban Transportation Complex Systems Theory and Technology of Ministry of Education (Beijing Jiaotong University), Beijing 100044, China)
Abstract:Pedestrian’s road-crossing model is the key part of micro-simulation for mixed traffic at signalized intersection. To reproduce the crossing behavior of pedestrians, the microscopic behaviors of the pedestrians passing through the crosswalk at signalized intersection were analyzed. A pedestrian’s decision making model based on gap acceptance theory was proposed. Based on the field data at three typical intersections in Beijing, China, the critical gaps and lags of pedestrians were calibrated. In addition, considering pedestrian’s required space, a modification of the social force model that consists of a self-deceleration mechanism prevents a simulated pedestrian from continuously pushing over other pedestrians, making the simulation more realistic. After the simple change, the modified social force model is able to reproduce the fundamental diagram of pedestrian flows for densities less than 3.5 m-2 as reported in the literature.
Key words:communication and transportation system; pedestrian simulation; social force model; decision making model; fundamental diagram; mixed traffic
