ABSTRACT

The problem of modelling the lane-changing process in work zone areas is important. This study proposed a multistage analytic model based on driving simulator experiment. Several scenarios under different traffic volumes and lane-ends sign positions are tested to collect the behavioral variables including distance, speed, and acceleration. Three successive stages covering the initiation part (including one stage) and action part (including two stages) are defined to depict driver’s acceleration patterns with mathematical formulations. The model reduces the complexity of depicting the lane-changing behavior by using critical acceleration variables. Meanwhile, some important conclusions were found. High traffic volume condition is more prone to aggressive driving behavior which reflected in larger longitudinal and lateral acceleration. Additionally, drivers closer to work zone tend to take an abrupt turning since less merging time and larger lateral acceleration were accepted. These findings are useful in work-zone planning and management.

摘要

对工作区换道过程进行建模的问题很重要。本研究提出了一种基于驾驶模拟器实验的多阶段分析模型。测试了不同交通量和车道末端标志位置下的几种场景，以收集包括距离、速度和加速度在内的行为变量。定义了包括启动部分（包括一个阶段）和动作部分（包括两个阶段）的三个连续阶段，以用数学公式描述驾驶员的加速模式。该模型通过使用关键加速度变量降低了描述变道行为的复杂性。同时，也得出了一些重要结论。高交通量条件下更容易出现激进的驾驶行为，这反映在更大的纵向和横向加速度上。此外，靠近工作区的驾驶员往往会突然转弯，因为可以接受更少的并道时间和更大的横向加速度。这些发现在工作区规划和管理中很有用。