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 …

A three-dimensional macroscopic fundamental diagram for mixed bi-modal urban networks

N Geroliminis, N Zheng, K Ampountolas - Transportation Research Part C …, 2014 - Elsevier
Recent research has studied the existence and the properties of a macroscopic fundamental
diagram (MFD) for large urban networks. The MFD should not be universally expected as …

On the distribution of urban road space for multimodal congested networks

N Zheng, N Geroliminis - Procedia-Social and Behavioral Sciences, 2013 - Elsevier
Transport systems in rea lc ities a re co mp le x with many modes of transport sharing and
competing fo r limited road space. This work intends to understand how space distributions …

Empirical analysis of large-scale multimodal traffic with multi-sensor data

H Fu, Y Wang, X Tang, N Zheng… - … Research Part C …, 2020 - Elsevier
Recent advances in the network-level traffic flow modelling provide an efficient tool for
analyzing traffic performance of large-scale networks. A relationship between density and …

Traffic automation and lane management for communicant, autonomous, and human-driven vehicles

M Amirgholy, M Shahabi, HO Gao - Transportation research part C …, 2020 - Elsevier
The advent of autonomous driving technologies has created a crucial need for upgrading
conventional traffic control and lane management strategies in large cities. In this research …

Estimating network travel time reliability with network partitioning

R Saedi, M Saeedmanesh, A Zockaie, M Saberi… - … Research Part C …, 2020 - Elsevier
Network travel time reliability can be represented by a relationship between network space-
mean travel time and the standard deviation of network travel time. The primary objective of …

Towards a political economy of transportation policy and practice in Nairobi

JM Klopp - Urban forum, 2012 - Springer
Towards a Political Economy of Transportation Policy and Practice in Nairobi | SpringerLink
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Optimal design of sustainable transit systems in congested urban networks: A macroscopic approach

M Amirgholy, M Shahabi, HO Gao - Transportation Research Part E …, 2017 - Elsevier
Mass transit is a key component of a sustainable transportation system in urban networks. In
this research, we propose a continuum approximation model to optimize the line spacing …

Modeling the dynamics of congestion in large urban networks using the macroscopic fundamental diagram: User equilibrium, system optimum, and pricing strategies

M Amirgholy, HO Gao - Transportation Research Part B: Methodological, 2017 - Elsevier
The macroscopic fundamental diagram (MFD) is introduced in recent studies to present the
relationship between the flow and the density of the network in large urban regions …

Connecting networkwide travel time reliability and the network fundamental diagram of traffic flow

HS Mahmassani, T Hou… - Transportation research …, 2013 - journals.sagepub.com
The existence of the network fundamental diagram (NFD) has been established at the urban
network scale. It relates three traffic descriptors: speed, density, and flow. However, its …