Estimation of a Time Dependent OD Matrix from Traffic Counts

根据流量计数估计随时间变化的 OD 矩阵

• 批准号: 07650613
• 负责人: KUWAHARA Masao
• 金额: $ 1.47万
• 依托单位: Univ. of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1996
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07650613/
• 关键词: OD flows; Network; Link flows; Route choice; OD推定; 観測交通量; 時空間ネットワーク

We propose the model for estimating time-dependent OD matrices from traffic counts in a general network with route choice activities.Many dynamic traffic simulation models have been developed in order to reproduce traffic conditions and evaluate policies of traffic control, signal control, one-way traffic control and so on. Such a dynamic model needs a time-dependent OD,especially one composed of small OD zones. However, it is hard to estimate OD flows directly from OD survey. In this study, we thus propose a dynamic estimator using time-dependent traffic counts to obtain time-dependent OD volumes.The model consists of two parts : (1) construction of the relationship between the time-dependent OD volumes and traffic counts at links and (2) estimation of a unique time-dependent OD matrices. In the first part, we define a three-dimensional network to relate OD matrices to traffic flow on links. We then propose a method of estimating route choice probabilities. In the second part, we employ the Entropy Maximizing method for the staic OD matrices estimation and extend it to time-dependent model. As an extension, we propose a simplified method of estimating route choice probability and a method to utilize aggregated prior OD information.At the last, we apply the model to a test network and examine its validity.

为了再现交通状况，评价交通控制、信号控制、单向交通控制等策略，提出了基于路径选择活动的交通流计数估计时变OD矩阵的模型。这样的动态模型需要依赖于时间的OD，特别是由小的OD区域组成的OD。然而，直接从OD调查中估算OD流量是困难的。该模型由两部分组成：(1)建立时变OD流量与路段交通量之间的关系；(2)估计唯一的时变OD矩阵。在第一部分中，我们定义了一个三维网络，将OD矩阵与道路上的交通流联系起来。然后，我们提出了一种估计路径选择概率的方法。在第二部分中，我们将熵最大化方法应用于静态OD矩阵估计，并将其推广到时变模型。作为扩展，我们提出了一种估计路径选择概率的简化方法和一种利用聚集的先验OD信息的方法，最后将该模型应用于测试网络并检验其有效性。

项目成果

H.Oneyama & M.Kuwahara: "An Estimation of a Time Dependent OD Flow from Observed Traffic Counts" Proceedings of Annual Meeting of Japan Society of Civil Engineering. No.50. 154-155 (1995)

奥尼山

小根山裕之、桑原雅夫: "路側観測交通量からの時間変化するOD交通量の推定モデルと適用実験" 第50回土木学会年次学術講演会講演集. 4. 154-155 (1995)

Hiroyuki Koneyama、Masao Kuwabara：“根据路边观测到的交通量估算时变 OD 交通量的模型和应用实验”第 50 届日本土木工程学会学术会议论文集 4. 154-155 (1995)。

小根山裕之・桑原雅夫: "路側観測交通量からの時間変化するOD交通量の推定(予定)" 交通工学. 32-2. (1997)

Hiroyuki Koneyama 和 Masao Kuwahara：“根据路边观察到的交通量估算随时间变化的 OD 交通量（计划）”《交通工程》（1997 年）。

H.Oneyama,M.Kuwahara T.Yoshii: "Eotimation of a Time Dependent OD Matrix from Traffic Counts" Proceedings of Third Ananal World Congress on ITS. CD Rom. (1996)

H.Oneyama、M.Kuwahara T.Yoshii：“Eotimation of a Time Dependent OD Matrix from Traffic Counts”第三届肛门世界智能交通大会论文集。

H.Oneyama & M.Kuwahara: "Estimation of a Time Dependent OD Matrix from Traffic Counts" Traffic Engineering. Vol.32, No.2 to be published (in Japanese). (1997)

奥尼山