Louisiana Transportation Research Center, Baton Rouge, Louisiana.
Department of Civil Engineering, Iowa State University, Ames, Iowa.
Traffic Inj Prev. 2020;21(5):308-312. doi: 10.1080/15389588.2020.1751831. Epub 2020 Apr 24.
Using naturalistic driving data, this study analyzed the driving behavior of major approach right and left turning vehicles to minor approach at rural two-way stop controlled intersections by detecting the location where drivers reacted to the upcoming intersection to complete a turning maneuver. The study used 449 time series traces from 29 two-way stop controlled intersections across five states for the analysis. All 449 traces were associated to free flow condition with driving not obstructed by the vehicle ahead. Each time series trace was analyzed to check the point drivers first reacted to the intersection for the turning maneuver and this point was called the reaction point. Braking Behavior of Major Approach Turning Vehicles at Rural Two-Way Stop Controlled Intersections: A Naturalistic Driving Study The results from this study showed that right turning vehicles began reacting, in general, sooner than left turning vehicles. More than 75% of drivers showed a reaction within 300 meters upstream of intersection for both types of turning maneuver. The study found driving speed at the reaction point significantly affecting the initial point of reaction. Drivers who were traveling faster than the posted speed limit were associated with a reaction point farther upstream than vehicles traveling at the speed limit. On-pavement marking upstream of the intersection was found to be associated with longer reaction distance, while posted intersection ahead warning signs showed a reverse effect. The result provides information on braking zone of turning vehicles at intersections which has implication on the placement of different countermeasures upstream at the major approach. By detecting reaction distance of all 449 time series trace, the study provides an influence area of the intersection for the turning vehicles.
利用自然驾驶数据，本研究通过检测驾驶员对即将到来的交叉口做出转弯反应的位置，分析了主要接近方向右转弯和左转弯车辆在农村双向停车控制交叉口与次要接近方向车辆的驾驶行为。本研究使用了来自五个州的 29 个双向停车控制交叉口的 449 个时间序列轨迹进行分析。所有 449 个轨迹都与自由流条件相关，即没有被前方车辆阻碍的驾驶情况。每个时间序列轨迹都进行了分析，以检查驾驶员对交叉口进行转弯操作的第一个反应点，这个点被称为反应点。农村双向停车控制交叉口主要接近转弯车辆的制动行为：自然驾驶研究结果表明，右转弯车辆通常比左转弯车辆更早开始反应。对于这两种转弯操作，超过 75%的驾驶员在交叉口上游 300 米范围内做出反应。研究发现，反应点处的行驶速度显著影响反应的初始点。行驶速度超过限速的驾驶员与行驶速度限速的车辆相比，反应点更靠前。交叉口上游的路面标记被发现与更长的反应距离有关，而交叉口前方的警告标志则显示出相反的效果。研究结果提供了交叉口转弯车辆的制动区信息，这对主要接近方向上交叉口上游不同对策的位置具有重要意义。通过检测所有 449 个时间序列轨迹的反应距离，本研究为转弯车辆提供了交叉口的影响区域。
