【摘 要】
：
作为最常见的驾驶行为之一,车辆跟驰及其建模过程一直都受到国内外学者的广泛关注,而车辆队列研究将跟驰模型扩展到队列,对于提高通行效率、降低燃油消耗、保持跟驰稳定性具有重要意义.队列行驶下,车辆切入行为对于队列跟驰状态有着显著的影响.本文根据传统的跟驰理论,基于NGSIMI-80路段数据,探究了车辆切入前后队列跟驰状态参数的变化规律.数据分析表明,队列的速度、车间距、车头时距(Time Headway
【机 构】
：
北京航空航天大学交通科学与工程学院车路协同与安全控制北京市重点实验室,北京100191
论文部分内容阅读
作为最常见的驾驶行为之一,车辆跟驰及其建模过程一直都受到国内外学者的广泛关注,而车辆队列研究将跟驰模型扩展到队列,对于提高通行效率、降低燃油消耗、保持跟驰稳定性具有重要意义.队列行驶下,车辆切入行为对于队列跟驰状态有着显著的影响.本文根据传统的跟驰理论,基于NGSIMI-80路段数据,探究了车辆切入前后队列跟驰状态参数的变化规律.数据分析表明,队列的速度、车间距、车头时距(Time Headway,TH)和碰撞时间(Time to Collision,TTC)在解释队列跟驰状态时不够准确,而安全裕度(SafetyMargin,SM)用于量化驾驶人的主观风险感知,能够很好地描述队列跟驰状态受到的切入行为的影响.对SM的量化结果表明,队列在稳定跟驰时,SM平均值和标准差的一阶差分在较小范围内波动,当有车辆切入时,会产生明显的突变.根据这一规律,能够通过这两个参数的变化判断车辆的切入行为,对于网联环境下队列的控制研究具有积极意义.
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