混合交通条件下多线分隔城市道路公交车站的容量下降

IF 3.2 Q3 TRANSPORTATION
Sruthi Sekhar Pallela, Arpan Mehar
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引用次数: 0

摘要

时间车流特征对于道路的规划和设计非常重要。本研究确定了不同城市道路的车流时间分配模式,并评估了设有路边公交站点的路段的通行能力下降情况。本研究在印度瓦兰加尔市和海德拉巴市的 8 个不同地点收集了四车道和六车道分隔路段的实地数据。异质车辆的平均时间车距与各种车距分布相匹配,用于估算路段的通行能力。影响通行能力的因素包括公交车频率、停留时间和平均路面宽度损失。通过确定通行能力降低百分比(PRC)来建立回归模型。此外,还利用实地观察到的交通流量数据绘制了速度-流量图,以确定选定路段的自由速度、临界速度和道路通行能力参数。在比较了两种方法得出的通行能力值后,研究确定了在通行能力和自由流条件下交通流的平均车流时间。研究还采用 Indo-HCM (2017) 中提供的方法确定了公交车站路段的通行能力值。根据 Indo-HCM 指南估算的通行能力值明显高于拟议通行能力模型的估算值。这是因为 Indo-HCM 指南只考虑了一个参数,即巴士频率。研究发现,除公交车频率外,停留时间、路面宽度损失和额外车道的存在也会影响多车道分隔城市道路上公交车站路段的通行能力下降。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Capacity drop at the bus stop on multilane divided urban roads under mixed traffic conditions

Time headway characteristics are of great importance for planning and design of roadway. The present study determines time headway distribution pattern of vehicular stream at various urban roads and evaluate drop in capacity of roadway section having curb-side bus stops. Field data for present study was collected at 8 different locations on four-lane and six-lane divided sections in the cities of Warangal and Hyderabad in India. The mean time headway of heterogeneous vehicles fitted to various headway distributions for estimating capacity of road section. The factors affecting the capacity have been identified as bus frequency, dwell time, and the average roadway width lost. Percentage reduction in capacity (PRC) is determined to develop regression model. Further, speed-flow diagrams were developed using field observed traffic flow data for determining parameters free-speed, critical speed, and roadway capacity on selected section. After comparing capacity values obtained from two methods, the study determined avg. time headway of vehicular stream under the traffic flow at capacity and free flow conditions. The study also finds capacity value of bus stop section using methodology provided in Indo-HCM (2017). The PRC values estimated based on Indo-HCM guidelines are found to be significantly higher than those estimated by the proposed PRC model. It is due to the Indo-HCM guideline considering only one parameter i.e. bus frequency. The study finds, in addition to bus frequency the dwell time, roadway width lost, and presence of an extra lane also influences the drop in capacity of bus stop section on multilane divided urban roads.

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来源期刊
IATSS Research
IATSS Research TRANSPORTATION-
CiteScore
6.40
自引率
6.20%
发文量
44
审稿时长
42 weeks
期刊介绍: First published in 1977 as an international journal sponsored by the International Association of Traffic and Safety Sciences, IATSS Research has contributed to the dissemination of interdisciplinary wisdom on ideal mobility, particularly in Asia. IATSS Research is an international refereed journal providing a platform for the exchange of scientific findings on transportation and safety across a wide range of academic fields, with particular emphasis on the links between scientific findings and practice in society and cultural contexts. IATSS Research welcomes submission of original research articles and reviews that satisfy the following conditions: 1.Relevant to transportation and safety, and the multiple impacts of transportation systems on security, human health, and the environment. 2.Contains important policy and practical implications based on scientific evidence in the applicable academic field. In addition to welcoming general submissions, IATSS Research occasionally plans and publishes special feature sections and special issues composed of invited articles addressing specific topics.
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