双车道高速公路跟随者状况与百分比:实证调查

A. Al-Kaisy
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引用次数: 1

摘要

本文对汽车跟随互动进行了实证研究。探测器数据来自爱达荷州,蒙大拿州和俄勒冈州的15个研究地点,代表了这三种公路类型。对车速和车头距的调查表明,车辆开始车跟互动时的车头时距(本研究中称为临界车头时距)在特定地点的范围内变化,下限通常在1到2秒之间变化,上限在6到7秒之间变化。研究还发现,随着车头距变小,越来越多的车辆进入尾随状态,以最小安全车头距行驶的车辆数量也在增加。此外,该研究引入了一种新的方法来估计交通流中的追随者百分比,并使用现场数据来获得车头时距截止值。第一类站点的百分比追随者的进展截止值在1.8到2.8秒之间,而第二类和第三类站点的进展截止值略高于3秒。本文对农村双车道高速公路上的车辆跟随互动及随从百分比估算进行了实证研究。本次调查使用了爱达荷州、蒙大拿州和俄勒冈州15个研究地点的现场数据。本研究最重要的发现总结如下:
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Following Status and Percent Followers on Two-Lane Highways: Empirical Investigation
This paper presents an empirical investigation into car following interactions. Detector data from 15 study sites in Idaho, Montana and Oregon representing all three highway classes were used in this investigation. Investigation of speeds and headways suggests that the headway at which vehicles start the car-following interaction (referred to in this study as the critical headway) varied in a range that is site-specific, with the lower limit generally varying between 1 and 2 seconds, and the upper limit varying between 6 and 7 seconds. The study also found that vehicles traveling at a perceived minimum safe headway increase in number as headways get smaller and more vehicles enter the car following state. Further, the study introduced a new approach for estimating percent followers in the traffic stream and used field data in deriving headway cut-off values. Headway cut-off value for percent followers at class I sites varied between 1.8 and 2.8 seconds, while those for class II and class III sites are slightly above 3 seconds. This paper presents an empirical investigation into the car-following interaction and the estimation of percent followers on rural two-lane highways. Field data from 15 study sites in Idaho, Montana and Oregon were used in this investigation. The most important findings of this study are summarized as follows:
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