Feedback Gating Control for Network Based on Macroscopic Fundamental Diagram

Empirical data from Yokohama, Japan, showed that a macroscopic fundamental diagram (MFD) of urban traffic provides for different network regions a unimodal low-scatter relationship between network vehicle density and network space-mean flow. This provides new tools for network congestion control. Based on MFD, this paper proposed a feedback gating control policy which can be used to mitigate network congestion by adjusting signal timings of gating intersections. The objective of the feedback gating control model is to maximize the outflow and distribute the allowed inflows properly according to external demand and capacity of each gating intersection. An example network is used to test the performance of proposed feedback gating control model. Two types of background signalization types for the intersections within the test network, fixed-time and actuated control, are considered. The results of extensive simulation validate that the proposed feedback gating control model can get a Pareto improvement since the performance of both gating intersections and the whole network can be improved significantly especially under heavy demand situations. The inflows and outflows can be improved to a higher level, and the delay and queue length at all gating intersections are decreased dramatically.

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Properties of a well-defined macroscopic fundamental diagram for urban traffic

Transportation Research Part B Methodological ◽

10.1016/j.trb.2010.11.004 ◽

2011 ◽

Vol 45 (3) ◽

pp. 605-617 ◽

Cited By ~ 262

Author(s):

Nikolas Geroliminis ◽

Jie Sun

Keyword(s):

Urban Traffic ◽

Fundamental Diagram ◽

Macroscopic Fundamental Diagram

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A Two-Layer Network Dynamic Congestion Pricing Based on Macroscopic Fundamental Diagram

Journal of Advanced Transportation ◽

10.1155/2018/8616120 ◽

2018 ◽

Vol 2018 ◽

pp. 1-11 ◽

Cited By ~ 2

Author(s):

Bangyang Wei ◽

Daniel(Jian) Sun

Keyword(s):

Travel Time ◽

Field Experiments ◽

Traffic Assignment ◽

Congestion Pricing ◽

Large Network ◽

Mean Flow ◽

Fundamental Diagram ◽

Macroscopic Fundamental Diagram ◽

Dynamic Congestion Pricing ◽

Total Travel Time

Dynamic congestion pricing has attracted increasing attentions during the recent years. Nevertheless, limited research has been conducted to address the dynamic tolling scheme at the network level, such as to cooperatively manage two alternative networks with heterogeneous properties, e.g., the two-layer network consisting of both expressway and arterial network in the urban areas. Recently, the macroscopic fundamental diagram (MFD) developed by both field experiments and simulation tests illustrates a unimodal low-scatter relationship between the mean flow and density network widely, providing the network traffic state is roughly homogeneous. It reveals traffic flow properties at an aggregated level and sheds light on dynamic traffic management of a large network. This paper proposes a bilevel programming toll model, incorporating MFD to solve the unbalanced flow distribution problem within the two-layer transportation networks. The upper level model aims at minimizing the total travel time, while the lower level focuses on the MFD-based traffic assignment, which extends the link-based traffic assignment to network wide level. Genetic algorithm (GA) and the method of successive average were adopted for solving the proposed model, on which an online experimental platform was established using VISSIM, MATLAB, and Visual Studio software packages. The results of numerical studies demonstrate that the total travel time is decreased by imposing the dynamic toll, while the total travel time savings significantly outweigh the toll paid. Consequently, the proposed dynamic toll scheme is believed to be effective from both traffic and economic points of view.

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Investigation of a city-scale three-dimensional Macroscopic Fundamental Diagram for bi-modal urban traffic

16th International IEEE Conference on Intelligent Transportation Systems (ITSC 2013) ◽

10.1109/itsc.2013.6728367 ◽

2013 ◽

Cited By ~ 1

Author(s):

Nan Zheng ◽

Konstantinos Aboudolas ◽

Nikolas Geroliminis

Keyword(s):

Three Dimensional ◽

Urban Traffic ◽

Fundamental Diagram ◽

Macroscopic Fundamental Diagram

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Perimeter control for urban traffic system based on macroscopic fundamental diagram

Physica A Statistical Mechanics and its Applications ◽

10.1016/j.physa.2018.02.172 ◽

2018 ◽

Vol 503 ◽

pp. 231-242 ◽

Cited By ~ 7

Author(s):

Chao-Yun Wu ◽

Ming Li ◽

Rui Jiang ◽

Qing-Yi Hao ◽

Mao-Bin Hu

Keyword(s):

Urban Traffic ◽

Fundamental Diagram ◽

Traffic System ◽

Macroscopic Fundamental Diagram

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Assessing road pricing effects on a multimodal network based on macroscopic fundamental diagram hysteresis

World Journal of Engineering ◽

10.1108/wje-01-2021-0067 ◽

2021 ◽

Vol ahead-of-print (ahead-of-print) ◽

Author(s):

Amr M. Wahaballa ◽

Seham Hemdan ◽

Fumitaka Kurauchi

Keyword(s):

Network Performance ◽

Transportation Network ◽

Hysteresis Loops ◽

Road Pricing ◽

Urban Traffic ◽

Fundamental Diagram ◽

Content Type ◽

Macroscopic Fundamental Diagram ◽

Travel Time Savings ◽

Multimodal Network

Purpose Road pricing is an efficient strategy for managing urban traffic to relieve congestion. The macroscopic fundamental diagram (MFD), which relates the average network density and flow, is a simple tool for assessing road pricing effects on transportation network performance. However, recent research indicates that it may have complexity (an MFD hysteresis loop), especially for city-scale networks. Although ignoring MFD hysteresis may provide inaccurate results, pricing models that consider this hysteresis are scarce. This paper aims to assess road pricing effects on network performance considering MFD hysteresis characteristics. Design/methodology/approach This paper evaluated different pricing strategies spatially and temporally and compared network performance based on MFD shape in the presence of MFD hysteresis loops. These strategies were developed on a multimodal (cars and buses) network using a multi-agent transport simulation (MATSim). Findings This study found that pricing some links for a short duration with an optimum charge calculated based on the MFD provides higher travel time savings than the previous relevant studies. Originality/value These findings may facilitate assessing road pricing effects on multimodal network performance considering MFD hysteresis.

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