Theoretical and Empirical Analysis of the Effects of Transit System Operations on Urban Networks

交通系统运营对城市网络影响的理论与实证分析

基本信息

  • 批准号:
    1301057
  • 负责人:
  • 金额:
    $ 14万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Standard Grant
  • 财政年份:
    2013
  • 资助国家:
    美国
  • 起止时间:
    2013-08-01 至 2015-07-31
  • 项目状态:
    已结题

项目摘要

This award explores the premise that the recently developed theory of the Network Fundamental Diagram (NFD) can be extended to account for the main effects that transit systems' operational characteristics (such as bus frequency, number of stops, number of routes) have on macroscopic network performance measures (such as, network capacity, mean travel time and probability of gridlock) and for the effects of network performance on transit operations. To accomplish this, the research approach will be to combine NFD theory with traffic flow theory of moving bottlenecks to produce the proposed NFD-transit theory and evaluate its results using both empirical data and a microscopic simulation model especially developed for this project. The empirical data will come from the metro Atlanta region and includes traffic data from loop detectors at signalized intersections and transit data from buses' GPS devices and ridership surveys.If successful, this award will improve our understanding of the cause-and-effect mechanisms between transit systems and transportation network performance. The research could be potentially transformative since traditional travel forecasting models cannot address this problem satisfactorily because of their reliance on travelers' origins and destinations. The proposed method is macroscopic and therefore does not require microscopic travel patterns. Although it is expected that the real-world data will deviate from the assumptions of the theory, valuable insights will be obtained by carefully studying how these deviations affect predictions and how this theory can be improved. The project will develop urban congestion reduction strategies that consider both public and private transportation alternatives. The results will be beneficial to the population of large urban areas, especially to underrepresented groups who often live in transit-dependent areas. The main findings will be disseminated through graduate-level courses, simulation and analysis tools made available online and through two workshops for planning agencies.
该奖项探讨了一个前提:最近开发的网络基本图理论(NFD)可以扩展,以说明运输系统的运营特征(例如公交频率,停靠次数,路线数)对宏观网络绩效指标(例如网络容量,网络容量,网络容量,平均旅行时间和网络效果)以及网络效果的效果的交易效果的主要影响。为此,研究方法将是将NFD理论与移动瓶颈的交通流量理论相结合,以生成拟议的NFD传输理论,并使用经验数据和该项目特别开发的微观模拟模型来评估其结果。经验数据将来自亚特兰大大都会地区,并包括来自信号交叉路口的循环探测器的流量数据,以及来自公交车的GPS设备和乘客量调查的交通数据。如果成功,该奖项将提高我们对交通系统和运输网络绩效之间因果关系机制的理解。这项研究可能具有潜在的变革性,因为传统的旅行预测模型无法令人满意地解决这个问题,因为它们依赖旅客的起源和目的地。所提出的方法是宏观的,因此不需要微观旅行模式。尽管预计实际数据将偏离理论的假设,但通过仔细研究这些偏差如何影响预测以及如何改善该理论,将获得有价值的见解。该项目将制定城市交通拥堵策略,以考虑公共和私人运输替代方案。结果将对大型城市地区的人口有益,尤其是对经常居住在过境依赖地区的代表性不足的群体。主要发现将通过研究生级课程,模拟和分析工具在线和两个计划机构的研讨会提供。

项目成果

期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)

暂无数据

数据更新时间:2024-06-01

Jorge Laval的其他基金

Criticality of Urban Networks: Untangling the Complexity of Urban Congestion
城市网络的重要性:解决城市拥堵的复杂性
  • 批准号:
    2311159
    2311159
  • 财政年份:
    2023
  • 资助金额:
    $ 14万
    $ 14万
  • 项目类别:
    Standard Grant
    Standard Grant
CPS: Medium: Emulating Emerging Autonomous Vehicle Technologies to Understand Their Impact on Urban Congestion
CPS:中:模拟新兴自动驾驶汽车技术以了解其对城市拥堵的影响
  • 批准号:
    1932451
    1932451
  • 财政年份:
    2019
  • 资助金额:
    $ 14万
    $ 14万
  • 项目类别:
    Standard Grant
    Standard Grant
Collaborative Research: Understanding the Impacts of Automated Vehicles on Traffic Flow Using Empirical Data
合作研究:利用经验数据了解自动驾驶汽车对交通流量的影响
  • 批准号:
    1826003
    1826003
  • 财政年份:
    2019
  • 资助金额:
    $ 14万
    $ 14万
  • 项目类别:
    Standard Grant
    Standard Grant
A Simplified Theory of Urban Congestion
城市拥堵的简化理论
  • 批准号:
    1562536
    1562536
  • 财政年份:
    2016
  • 资助金额:
    $ 14万
    $ 14万
  • 项目类别:
    Standard Grant
    Standard Grant
CAREER: Impact of Freeway Geometric Design on Congestion Characteristics
职业:高速公路几何设计对拥堵特征的影响
  • 批准号:
    1055694
    1055694
  • 财政年份:
    2011
  • 资助金额:
    $ 14万
    $ 14万
  • 项目类别:
    Standard Grant
    Standard Grant
Collaborative Research: Analysis and Modeling of Traffic Instabilities in Congested Traffic
协作研究:拥堵交通中的交通不稳定分析与建模
  • 批准号:
    0856218
    0856218
  • 财政年份:
    2009
  • 资助金额:
    $ 14万
    $ 14万
  • 项目类别:
    Standard Grant
    Standard Grant

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