车型与时间频率对跟车车头时距的影响研究

发布时间：2018-01-17 00:28

本文关键词：车型与时间频率对跟车车头时距的影响研究　出处：《中国安全科学学报》2014年10期 　论文类型：期刊论文

【摘要】：为研究车型和驾驶人速度感知对跟车行为的影响,设计影响速度感知的边缘率标线,在高速公路上开展试验,并获取车型、车速和车间距等数据,考察4种典型跟车模式下的平均速度和平均车头时距差异。结果显示:前车为小型车时,跟车车头时距更小,且小型车的跟车车头时距小于大型车;当时间频率在[5 Hz,12 Hz]以内时,平均车速随时间频率增高而降低,而车头时距则随之增大;车型与时间频率协同影响跟车车头时距。以上结果表明,前方不同车型车辆可引起驾驶人感知大小(感知距离)的差异,进而导致车头时距的变化;时间频率的增大引起减速度绝对值的增大,并导致车头时距增大。针对特定车型(跟车车头时距较小),通过铺设边缘率标线来增大跟车车头时距,可提高行车安全性。
[Abstract]:In order to study the effect of vehicle and driving speed perception of car following behavior, affecting the design of the speed perception of margin line, to carry out the test on the highway, and get cars, vehicle speed and distance data, investigated 4 kinds of distance difference between the average speed of a typical car mode and average headway. The results showed: before the car as a small car, with the car headway is smaller, and the small car with the car headways less than large cars; when the time frequency in [5 Hz, less than 12 Hz], the average speed decreases with time frequency increases, while the headway increases; the car type and time frequency of the synergistic effect with the car front when the distance. The results above indicated that the front vehicle drivers can cause different perceived size (perceived distance) differences, which led to changes in distance headway; increase the time and frequency caused by the increase of absolute value of speed reduction, and lead to the headway needle increases. For a particular type of vehicle (with a small distance from the head of the car), it is possible to increase the safety of the vehicle by laying the edge rate marking to increase the distance between the head and the car.

【作者单位】：武汉理工大学交通学院;贵州省公路局高速公路建设营运中心;贵州省公路局科技处;
【基金】：国家自然科学基金资助(51078299,50778142) 贵州省交通运输厅科技项目(2012-122-016)
【分类号】：U491
【正文快照】： 0引言追尾碰撞是道路交通事故的一种主要形式,它与驾驶人对速度和距离的判断密切相关。不同类型的车辆呈现出不同跟车行为[1],因而这种行为差异或许是导致追尾碰撞事故的原因之一。研究显示[2-4],不同类型(大小)的车辆在跟随或被跟随行驶时,表现出了车头间距或车头时距上的差

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