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Characteristics for Fluctuation of Saturation Flow Rate at Signalized Intersections

信号交叉口饱和流量波动特征

基本信息

批准号：
10650531
负责人：
SHIKATA Shigenori
金额：
$ 2.24万
依托单位：
TOKYO METROPOLITAN UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1998
资助国家：
日本
起止时间：
1998 至 1999
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10650531/
关键词：
signalized intersection traffic capacity saturation flow rate lane width heavy vehicle passenger car equivalent multiple comparison procedure 交通客量変動分析車頭時間

项目摘要

The capacity of signalized intersection is decided based on saturation flow rate and signal control method. Therefore, the research on the capacity of signalized intersection is carried out for the saturation flow rate in most case. For the purpose of this study, saturation flow rate was measured in Tokyo and metropolitan suburb signalized intersection. In order to collect measured data of the saturation flow rate, the signalized intersection was selected in proportion to approach width, lane width, and traffic lane number for being a fundamental factor of the saturation flow rate. The observation was carried out by the method for photographing the object approach by video cameras. The results got in this study are as follows.(1) At present, the same basic value of saturation flow rate was used for any geometric structure condition. However, as a result of the observation, it was confirmed that the saturation flow rate considerably and greatly fluctuate, even if the geometric structure condition is identical.(2) It was confirmed that the value of saturation flow rate got in this study was 1600〜2200/hour of green and that there was very large fluctuation. Especially, saturation flow rate of the narrow lane widths under 3m was lower than the standard lane widths.(3) As a result of the detailed analysis of each intersection, the outside data that deviated from the distribution existed, and all these data differed in each intersection. Therefore, it was clarified that the expected values of the saturation flow rate of every intersection varied, and that the saturation flow rate is made to fluctuate.

信号交叉口的通行能力是根据饱和流量和信号控制方法来确定的。因此，在大多数情况下，信号交叉口的通行能力都是在饱和流量下进行的。为实现本研究的目的，在东京和大都市郊区信号交叉口进行了饱和流量测量。为了收集饱和流量的实测数据，信号交叉口按照引道宽度、车道宽度和车道数的比例进行选择，作为饱和流量的基本因素。观察是通过摄像机拍摄物体接近的方法进行的。研究结果如下：(1)目前，在任意几何结构条件下，均采用相同的饱和流量基准值。然而，观测的结果证实，即使几何结构条件相同，饱和流量也会有很大的波动。(2)确定了本研究测得的饱和流量为1600~2200/小时果岭，存在很大的波动。特别是3m以下窄车道的饱和流量低于标准车道宽度。(3)通过对各交叉口的详细分析，发现外部数据存在偏离分布的现象，且各交叉口的数据存在差异。从而阐明了每个交叉口饱和流量的期望值是不同的，饱和流量是波动的。