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Development of Novice Drivers Adjustment Factors for Capacity of Basic Roadway Segment

机译：新手驾驶员基本路段通行能力调整因素的发展

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In the Highway Capacity Manual, a variety of factors were considered to enhance the accuracyof capacity estimation under prevailing conditions. However, no factors accounted for thepossible changes of capacity due to novice drivers were provided. The primary objective of thisstudy was to develop adjustment factors to evaluate the impacts of novice drivers on capacity ofbasic roadway segment. On-road experiments were conducted for measuring the car-followingbehavioral data associated with novice and experienced drivers. Comparative analyses wereconducted to compare the spacings and headways selected by novice and experienced drivers asthey were following other vehicles. It was found that novice drivers prefer maintaining relativelylarger spacings and headways than experienced drivers do. These differences in spacings andheadways were statistically significant. Linear regression analyses were then conducted to relatethe vehicle speeds to the spacings and the headways for novice and experienced drivers.Combined with the fundamental relationships between these two car-following behaviormeasures and traffic flow parameters, adjustment factors were developed to quantitativelyevaluate the effects of novice drivers’ car-following behaviors on capacity of basic roadwaysegment. It was found that the reduction in capacity increases with an increase in the proportionof novice drivers in the traffic stream. The presence of novice drivers may result in up to 13% ofcapacity reduction when novice drivers travel on the whole road with the average speed of 90km/h. The validity of implementing the novice driver adjustment factor was tested againstmeasured data. The results of validation determine that the proposed adjustment factors result inimproved estimates of capacity of basic roadway segment.
机译：在《公路通行能力手册》中，考虑了多种因素以提高准确性 当前条件下的容量估计值。但是，没有任何因素导致 提供了由于新手驱动程序可能引起的容量变化。这个的主要目标 研究的目的是开发调整因子，以评估新手对驾驶员能力的影响。 基本巷道段。进行了道路实验以测量汽车跟随性 与新手和经验丰富的驾驶员相关的行为数据。比较分析是 进行比较新手和有经验的驾驶员选择的间距和车距 他们在追随其他车辆。发现新手驾驶员更喜欢保持相对 比有经验的驾驶员更大的间距和车距。这些间距和 进展是有统计学意义的。然后进行线性回归分析以建立关联 对于新手和有经验的驾驶员，车辆的速度可以达到间距和车距。 结合这两种跟车行为之间的基本关系 措施和交通流参数，调整因子被开发以定量 评估新手驾驶员的跟车行为对基本道路通行能力的影响 部分。发现容量的减少随着比例的增加而增加 新手司机在交通流中。新手驾驶员的出现可能导致多达13％的人 新手驾驶员以90的平均速度在整条道路上行驶时的容量减少 公里/小时针对实施新手驾驶员调整因子的有效性进行了测试 测量数据。验证结果确定拟议的调整因子导致 改进了基本巷道路段的通行能力估计。

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