%0 Journal Article %T Optimization of Crosswalk Width Based on Bi-Directional Pedestrian Crossing Time at Signalized Intersections<br>Optimization of Crosswalk Width Based on Bi-Directional Pedestrian Crossing Time at Signalized Intersections %A Ningbo Cao %A Yongheng Chen %A Zhaowei Qu %A Liying Zhao %A Yanfei Li %A Qiujie Yang %J 北京理工大学学报（自然科学中文版) %D 2018 %R 10.15918/j.jbit1004-0579.201827.0217 %X The effects of the interactions between bi-directional pedestrians on the crossing time and the crosswalk width are studied. Firstly, the crossing process of bi-directional pedestrians is analyzed. The total crosswalk time is divided into a discharge time and a crossing time. The interactions between bi-directional pedestrians are quantified with the drag force theory. Then, a model is developed to study the crossing time based on the kinetic energy theory and momentum theory. Subsequently, the related parameters of the proposed model are calibrated with observed information. The relationships among crosswalk width, signal time, pedestrian volume and level of service are simulated with the proposed model. The results are verified and compared with other models. The proposed model has an absolute value of relative error of 9.38%, which is smaller than that of the Alhajyaseen model (15.26%) and Highway Capacity Manual (HCM) model (12.42%). Finally, suggested crosswalk widths at different conditions are successfully estimated with the proposed crossing time model.<br>The effects of the interactions between bi-directional pedestrians on the crossing time and the crosswalk width are studied. Firstly, the crossing process of bi-directional pedestrians is analyzed. The total crosswalk time is divided into a discharge time and a crossing time. The interactions between bi-directional pedestrians are quantified with the drag force theory. Then, a model is developed to study the crossing time based on the kinetic energy theory and momentum theory. Subsequently, the related parameters of the proposed model are calibrated with observed information. The relationships among crosswalk width, signal time, pedestrian volume and level of service are simulated with the proposed model. The results are verified and compared with other models. The proposed model has an absolute value of relative error of 9.38%, which is smaller than that of the Alhajyaseen model (15.26%) and Highway Capacity Manual (HCM) model (12.42%). Finally, suggested crosswalk widths at different conditions are successfully estimated with the proposed crossing time model. %K signalized crosswalks bi-directional pedestrian drag force theory crossing time crosswalk width< %K br> %K signalized crosswalks bi-directional pedestrian drag force theory crossing time crosswalk width %U http://journal.bit.edu.cn/yw/bjlgyw/ch/reader/view_abstract.aspx?file_no=20180217&flag=1