Abstract

This study investigates the lane-changing behavior in work zone merging areas during the period from the time of starting a lane-changing maneuver to that of completing the lane-changing maneuver. With vehicle trajectory data from short-term work zone sites, we establish a spatial-temporal varying coefficient model considering possible spatial-varying and time-varying effects. Model results show that four factors including the longitudinal gap between the lane-changing vehicle and lead vehicle, lane-changing vehicle speed, through lane lag vehicle type and crash severity between the lane-changing vehicle and the through lane lag vehicle exhibit spatial-varying effects on the drivers’ lane-changing behavior, while time-varying effects are found from the lead vehicle speed in the merge lane, crash severities of the lane-changing vehicle with regard to the lead vehicle and the through lane lead vehicle. Time-varying and spatial-varying effects from vehicle crash severities between the lane-changing vehicle and through lane vehicles suggest that lane-changing vehicles tend to take a risky merge as the elapsed time increases or when they are closer to the work zone.

摘要

本研究调查了从开始换道操作到完成换道操作期间工作区合并区域的换道行为。利用来自短期工作区站点的车辆轨迹数据，我们建立了一个考虑可能的时变和时变效应的时空变化系数模型。模型结果表明，变道车辆与前导车辆的纵向差距、变道车辆速度、车道滞后车辆类型和变道车辆与车道滞后车辆之间的碰撞严重程度四个因素表现出空间变化。对驾驶员变道行为的影响，而从合并车道中的领先车辆速度发现时变效应，变道车辆相对于引导车辆和直通车道引导车辆的碰撞严重程度。变道车辆和通过车道车辆之间的车辆碰撞严重程度的时变和空间变化影响表明，随着经过的时间增加或当它们更接近工作区时，变道车辆倾向于冒险并道。