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- research-articleNovember 2023
The Price of Anarchy for Instantaneous Dynamic Equilibria
Mathematics of Operations Research (MOOR), Volume 48, Issue 4Pages 2167–2195https://doi.org/10.1287/moor.2022.1336We consider flows over time within the deterministic queueing model of Vickrey and study the solution concept of instantaneous dynamic equilibrium (IDE), in which flow particles select at every decision point a currently shortest path. The length of such ...
- research-articleAugust 2023
Convergence of a Packet Routing Model to Flows over Time
Mathematics of Operations Research (MOOR), Volume 48, Issue 3Pages 1741–1766https://doi.org/10.1287/moor.2022.1318Mathematical approaches for modeling dynamic traffic can be roughly divided into two categories: discrete packet routing models and continuous flow over time models. Despite very vital research activities on models in both categories, their connection was ...
- research-articleMarch 2024
Prediction equilibrium for dynamic network flows
The Journal of Machine Learning Research (JMLR), Volume 24, Issue 1Article No.: 310, Pages 14663–14695We study a dynamic traffic assignment model, where agents base their instantaneous routing decisions on real-time delay predictions. We formulate a mathematically concise model and define dynamic prediction equilibrium (DPE) in which no agent can at any ...
- research-articleJuly 2021
Convergence of a Packet Routing Model to Flows Over Time
EC '21: Proceedings of the 22nd ACM Conference on Economics and ComputationPages 797–816https://doi.org/10.1145/3465456.3467626The mathematical approaches for modeling dynamic traffic can roughly be divided into two categories: discrete packet routing models and continuous flow over time models. Despite very vital research activities on models in both categories, the connection ...
- research-articleNovember 2019
Regional Dynamic Traffic Assignment Framework for Macroscopic Fundamental Diagram Multi-regions Models
Transportation Science (TRNPS), Volume 53, Issue 6Pages 1563–1590https://doi.org/10.1287/trsc.2019.0921In this paper, we propose a regional dynamic traffic assignment framework for macroscopic fundamental diagram (MFD) models that explicitly accounts for trip length distributions. The proposed framework considers stochasticity on both the trip lengths and ...
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- research-articleJanuary 2019
Link-Based System Optimum Dynamic Traffic Assignment Problems in General Networks
Most current system optimum dynamic traffic assignment (SO-DTA) models do not contain first-in-first-out (FIFO) constraints and are limited to single-destination network applications. In “Link-based System Optimum Dynamic Traffic Assignment Problems in ...
Most current system optimum dynamic traffic assignment (SO-DTA) models do not contain first-in-first-out (FIFO) constraints and are limited to single-destination network applications. In this study, we introduce the link transmission model (LTM) for the ...
- research-articleJanuary 2019
Agent-Based Dynamic Traffic Assignment with Information Mixing
Procedia Computer Science (PROCS), Volume 151, Issue CPages 864–869https://doi.org/10.1016/j.procs.2019.04.119AbstractThis study develops an approach for network assignment convergence using individualized agent-based routing and agent-specific link cost information as well as historical travel times. Each traveler is routed individually from their starting and ...
- articleDecember 2018
Consistency and Inconsistency Between the Fundamental Relationships on Which Different Traffic Assignment Models Are Based
Transportation Science (TRNPS), Volume 52, Issue 6Pages 1548–1569https://doi.org/10.1287/trsc.2017.0809We compare the forms and properties of different macroscopic behavioral relationships on which different static and dynamic traffic assignment models have been based, namely, travel time-flow functions, travel time-occupancy functions, and flow-...
- articleJune 2018
A Link-Based Differential Complementarity System Formulation for Continuous-Time Dynamic User Equilibria with Queue Spillbacks
Transportation Science (TRNPS), Volume 52, Issue 3Pages 564–592https://doi.org/10.1287/trsc.2017.0752This paper proposes a link-based continuous-time dynamic user equilibrium model for networks with single destinations. The model captures realistic queue spillbacks by applying the double-queue concept at the link level and developing a new nodal model ...
- research-articleMay 2018
Just do it! Combining agent-based travel demand models with queue based-traffic flow models
Procedia Computer Science (PROCS), Volume 130, Issue CPages 858–864https://doi.org/10.1016/j.procs.2018.04.081AbstractProper travel demand models aim to create an equilibrium between expected travel times in the planning phase and simulated travel times after mapping the road traffic on the road network. While agent-based travel demand models (ABM) focus on the ...
- articleAugust 2017
Travel-Time Models With and Without Homogeneity Over Time
Transportation Science (TRNPS), Volume 51, Issue 3Pages 882–892https://doi.org/10.1287/trsc.2016.0674In dynamic network loading and dynamic traffic assignment for networks, the link travel time is often taken as a function of the number of vehicles x t on the link at time t of entry to the link, that is, Ïï t = f x t , which implies that ...
- research-articleApril 2017
Exploring simulation based dynamic traffic assignment with a large-scale microscopic traffic simulation model
ANSS '17: Proceedings of the 50th Annual Simulation SymposiumArticle No.: 11, Pages 1–12With better computational resources, microscopic transportation models are beginning to reach size and scale similar to regional macroscopic models. Calibrating complex large-scale transportation models is not trivial and is typically performed using ...
- ArticleSeptember 2015
System Optimal Dynamic Lane Reversal for Autonomous Vehicles
ITSC '15: Proceedings of the 2015 IEEE 18th International Conference on Intelligent Transportation SystemsPages 1825–1830https://doi.org/10.1109/ITSC.2015.296Transformative technologies such as autonomous vehicles (AVs) create an opportunity to reinvent features of the traffic network to improve efficiency. The focus of this work is dynamic lane reversal: using AV communications and behavior to change the ...
- ArticleSeptember 2015
Large-Scale Dynamic Traffic Assignment: Practical Lessons from an Application in Sydney, Australia
ITSC '15: Proceedings of the 2015 IEEE 18th International Conference on Intelligent Transportation SystemsPages 1735–1740https://doi.org/10.1109/ITSC.2015.282Traditional static traffic assignment models no longer meet the strategic planning needs of most major metropolitan areas, especially in regard to evaluating major infrastructure projects. One promising possibility is dynamic traffic assignment (DTA), ...
- research-articleAugust 2015
Sophisticated route calculation approaches for microscopic traffic simulations
SIMUTools '15: Proceedings of the 8th International Conference on Simulation Tools and TechniquesPages 147–154https://doi.org/10.4108/eai.24-8-2015.2261359In order to implement meaningful microscopic traffic simulations, a sophisticated calculation of the vehicle routes is essential. In this paper, different route calculation approaches for microscopic traffic simulators are analysed and compared. Various ...
- articleFebruary 2015
On the System Optimum Dynamic Traffic Assignment and Earliest Arrival Flow Problems
This paper investigates the cell-transmission model CTM-based single destination system optimum dynamic traffic assignment SO-DTA problem, focusing attention on a case where the cell properties are time-invariant. We show the backward propagation of ...
- research-articleAugust 2012
Applying dynamic traffic assignment in modeling permit-restricted parking utilizing microscopic traffic simulation
Many universities are evaluating ways to improve mobility while dealing with increased demand for parking within the campus. Different types of parking strategies are considered as potential tools for improving campus mobility and meeting increased ...
- articleNovember 2011
Bayesian Demand Calibration for Dynamic Traffic Simulations
Transportation Science (TRNPS), Volume 45, Issue 4Pages 541–561https://doi.org/10.1287/trsc.1100.0367We present an operational framework for the calibration of demand models for dynamic traffic simulations, where calibration refers to the estimation of a structurally predefined model's parameters from real data. Our focus is on disaggregate simulators ...
- articleFebruary 2011
A Network Flow Algorithm for the Cell-Based Single-Destination System Optimal Dynamic Traffic Assignment Problem
Transportation Science (TRNPS), Volume 45, Issue 1Pages 121–137The cell-transmission model-based single-destination system optimal dynamic traffic assignment problem proposed by Ziliaskopoulos was mostly solved by standard linear programming (LP) methods, e.g., simplex and interior point methods, which produce link-...
- ArticleMay 2009
Web Services-Based Grid Computing for Traffic Flow Predictive Control
GCIS '09: Proceedings of the 2009 WRI Global Congress on Intelligent Systems - Volume 03Pages 455–459https://doi.org/10.1109/GCIS.2009.129The vehicles are navigated and assigned to the optimized routes according to the information of real-time and predicted traffic flow so that the optimization of traffic flow system and travelers’ satisfaction degree can be both achieved. The architecture ...