Macroscopic network-level traffic models: Bridging fifty years of development toward the next era

M Johari, M Keyvan-Ekbatani, L Leclercq… - … Research Part C …, 2021 - Elsevier
Network macroscopic fundamental diagrams (NMFD) and related network-level traffic
dynamics models have received both theoretical support and empirical validation with the …

Expanding the scope of the bicycle level-of-service concept: A review of the literature

K Kazemzadeh, A Laureshyn, L Winslott Hiselius… - Sustainability, 2020 - mdpi.com
Research into the bicycle level-of-service (BLOS) has been extensively conducted over the
last three decades. This research has mostly focused on user perceptions of comfort to …

Exploiting the fundamental diagram of urban networks for feedback-based gating

M Keyvan-Ekbatani, A Kouvelas, I Papamichail… - … Research Part B …, 2012 - Elsevier
Traffic signal control for urban road networks has been an area of intensive research efforts
for several decades, and various algorithms and tools have been developed and …

Urban network gridlock: Theory, characteristics, and dynamics

HS Mahmassani, M Saberi, A Zockaie - Procedia-Social and Behavioral …, 2013 - Elsevier
This study explores the limiting properties of network-wide traffic flow relations under heavily
congested conditions in a large-scale complex urban street network; these limiting …

Data efficient reinforcement learning and adaptive optimal perimeter control of network traffic dynamics

C Chen, YP Huang, WHK Lam, TL Pan, SC Hsu… - … Research Part C …, 2022 - Elsevier
Existing data-driven and feedback traffic control strategies do not consider the heterogeneity
of real-time data measurements. Besides, traditional reinforcement learning (RL) methods …

On the stochastic fundamental diagram for freeway traffic: Model development, analytical properties, validation, and extensive applications

X Qu, J Zhang, S Wang - Transportation research part B: methodological, 2017 - Elsevier
In this research, we apply a new calibration approach to generate stochastic traffic flow
fundamental diagrams. We first prove that the percentile based fundamental diagrams are …

[HTML][HTML] Hybrid perimeter control with real-time partitions in heterogeneous urban networks: An integration of deep learning and MPC

S Jiang, M Keyvan-Ekbatani - Transportation Research Part C: Emerging …, 2023 - Elsevier
Network-wide perimeter control strategies have been shown promise in recent years. These
perimeter control strategies are mostly based on networks with fixed boundaries. However …

On the fundamental diagram for freeway traffic: A novel calibration approach for single-regime models

X Qu, S Wang, J Zhang - Transportation Research Part B: Methodological, 2015 - Elsevier
The speed-density or flow-density relationship has been considered as the foundation of
traffic flow theory. Existing single-regime models calibrated by the least square method …

Data fusion algorithm for macroscopic fundamental diagram estimation

L Ambühl, M Menendez - Transportation Research Part C: Emerging …, 2016 - Elsevier
A promising framework that describes traffic conditions in urban networks is the macroscopic
fundamental diagram (MFD), relating average flow and average density in a relatively …

Hierarchical control for stochastic network traffic with reinforcement learning

ZC Su, AHF Chow, CL Fang, EM Liang… - … Research Part B …, 2023 - Elsevier
This study proposes a hierarchical control framework to maximize the throughput of a road
network driven by travel demand with uncertainties. In the upper level, a perimeter controller …