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Large-Scale Traffic Signal Offset Optimization [article]

Yi Ouyang, Richard Y. Zhang, Javad Lavaei, Pravin Varaiya
2019 arXiv   pre-print
The offset optimization problem seeks to coordinate and synchronize the timing of traffic signals throughout a network in order to enhance traffic flow and reduce stops and delays.  ...  In this paper, we present a novel algorithm to solve this new formulation to near-global optimality on a large-scale.  ...  This agrees with the claim of Corollary 12 and it demonstrates the ability of our algorithm in solving large-scale traffic offset optimization. VI.  ... 
arXiv:1911.08368v1 fatcat:ekkipngoindhrfw4yxi66kvkti

Evaluation and Application of Urban Traffic Signal Optimizing Control Strategy Based on Reinforcement Learning

Yizhe Wang, Xiaoguang Yang, Yangdong Liu, Hailun Liang
2018 Journal of Advanced Transportation  
However, the traffic signal optimization strategy based on reinforcement learning is suitable for complex traffic environments (high flows and multiple intersections), and the effects of which are better  ...  provide new ideas and methods for traffic signal control theory.  ...  and demonstrate the potential of MATSIM for large-scale dynamic transport simulation [18] .  ... 
doi:10.1155/2018/3631489 fatcat:4sqihpd5sbfyji26vkgedz3b7q

Genetic Algorithm for Multiple Bus Line Coordination on Urban Arterial

Zhen Yang, Wei Wang, Shuyan Chen, Haoyang Ding, Xiaowei Li
2015 Computational Intelligence and Neuroscience  
Genetic algorithm is used to optimize the offset scheme of traffic signals to minimize the total red time that all bus lines encounter in two directions of the arterial.  ...  The results show that the methods in this paper can reduce total red time of all the bus lines by 31.9% on the object arterial and thus improve the traffic efficiency of the whole arterial and promote  ...  Table 3 shows that it is difficult for the algorithm to find the exact globally optimal solution. The reason may lie in the large scale of problem in this paper.  ... 
doi:10.1155/2015/868521 pmid:25663837 pmcid:PMC4309291 fatcat:64q64p3llbe7rj2txxuy22tqpe

Adaptive Coordination Offsets for Signalized Arterial Intersections using Deep Reinforcement Learning [article]

Keith Anshilo Diaz, Damian Dailisan, Umang Sharaf, Carissa Santos, Qijian Gan, Francis Aldrine Uy, May T. Lim, Alexandre M. Bayen
2022 arXiv   pre-print
Yet, such approaches may bypass low volume links for several cycles in order to optimize the network-level traffic flow.  ...  The resulting policy dynamically readjusts phase offsets in response to changes in traffic demand.  ...  In addition, we would like to extend our model to multi-agent RL to optimize the coordination in large-scale networks.  ... 
arXiv:2008.02691v3 fatcat:asjaiv76x5bzxjxyeovr3vq42u

Page 816 of The Journal of the Operational Research Society Vol. 58, Issue 6 [page]

2007 The Journal of the Operational Research Society  
the offsets.  ...  A real-data road network is taken into ac- count for numerical comparison with the other approach and extensions to a variety of large-scale hypothetical networks are considered. tions of green times and  ... 

Combined dynamic traffic assignment and urban traffic control models

Evangelos Mitsakis, Josep Maria Salanova, George Giannopoulos
2011 Procedia - Social and Behavioral Sciences  
their applicability in large scale networks.  ...  , traffic forecasting and incident detection is being developed according to principles of large-scale integrated systems engineering.  ...  The traffic flow conditions in large-scale urban road networks depend to a large degree on the signal control strategies that are being applied.  ... 
doi:10.1016/j.sbspro.2011.08.049 fatcat:ms6bqr2sg5apliuwoohheaupyu

Assessing Longitudinal Arterial Performance and Traffic Signal Retiming Outcomes

Steven M. Lavrenz, Christopher M. Day, W. Benjamin Smith, James R. Sturdevant, Darcy M. Bullock
2016 Transportation Research Record  
This study presents a use case for an active traffic management strategy on a signalized corridor over a 5year period, during which traffic volumes increased by approximately 36%, and offset optimization  ...  Agencies can utilize these strategies to quantitatively assess how traffic performance and signal timing degrade over time, in a manner similar to physical infrastructure assets.  ...  One notable study which previously estimated large-scale, long-term performance measures for traffic signal systems was performed by the Bavarian Road Administration.  ... 
doi:10.3141/2558-07 fatcat:sumxhshntremvjoyq4bk6mvcv4

A Novel Decentralized Game-Theoretic Adaptive Traffic Signal Controller: Large-Scale Testing

Hossam M. Abdelghaffar, Hesham A. Rakha
2019 Sensors  
and phase split traffic signal controller and a centralized fully-coordinated adaptive phase split, cycle length, and offset optimization controller.  ...  The results demonstrate significant potential benefits of using the proposed controller over other state-of-the-art centralized and de-centralized adaptive traffic signal controllers on large-scale networks  ...  traffic signal (I 3 ) has action (A 33 ) that optimizes its performance.  ... 
doi:10.3390/s19102282 fatcat:yo5athtj4rh7tmhk7juq655kh4

Traffic signal optimization using cyclically expanded networks

Ekkehard Köhler, Martin Strehler
2015 Networks  
However, it is easy to see that the traffic assignment has an influence on the optimal signal coordination and, vice versa, a change in the signal coordination changes the optimal traffic assignment.  ...  Using this model we compute optimized signal coordinations and traffic assignment on real-world street networks.  ...  Klaus Nökel from ptv AG for the provided real-world data, the opportunity to use VIS-SIM for our experiments and for very valuable discussions on traffic signal coordinations.  ... 
doi:10.1002/net.21601 fatcat:jpyxe52a55hrzajcoaiwnm6uau

An efficient simulation-based optimization algorithm for large-scale transportation problems

Carolina Osorio, Linsen Chong
2012 Proceedings Title: Proceedings of the 2012 Winter Simulation Conference (WSC)  
The problem addressed is considered large-scale and complex both in the fields of derivative-free optimization and simulation-based optimization.  ...  This paper applies a computationally efficient simulation-based optimization (SO) algorithm suitable for large-scale transportation problems. The algorithm is based on a metamodel approach.  ...  CONCLUSION This paper applies a simulation-based optimization algorithm suitable to address large-scale problems under tight computational budgets.  ... 
doi:10.1109/wsc.2012.6465156 dblp:conf/wsc/OsorioC12 fatcat:jtmrtuiru5cqhdxpfbnkh2ysza

A Method for Signal Coordination in Large-Scale Urban Road Networks

Bao-Lin Ye, Weimin Wu, Weijie Mao
2015 Mathematical Problems in Engineering  
In this research, a method to optimize and coordinate the traffic signal in urban road networks is developed, which deals with this challenge by decomposing the network into several arterial roads and  ...  Due to the large-scale of road networks and numerous time-varying parameters, a basic challenge faced by these methods is the high computational complexity.  ...  Mathematical Problems in Engineering Conclusion This paper investigates the optimization and coordination of signal splits in large-scale urban road networks.  ... 
doi:10.1155/2015/720523 fatcat:bafyr6h2nfgr5mncrpddy6xk6i

Real‐time predictive coordination based on vehicle‐triggered platoon dispersion in a low penetration connected vehicle environment

Jiangchen Li, Liqun Peng, Tony Z. Qiu
2021 IET Intelligent Transport Systems  
the potential to enhance other CV-based signal control applications in the initial deployment stage of CV technology.  ...  The connected vehicle (CV) technology can benefit signal coordination with fine-grained spatial and temporal vehicle and infrastructure data via real-time communication.  ...  The former offline offset optimization can provide good offset values in low-CVpenetration conditions by aggregating large CV trajectories.  ... 
doi:10.1049/itr2.12121 fatcat:4phzo23xarfclcwojza7wo3rci

Evolutionary design optimization of traffic signals applied to Quito city

Rolando Armas, Hernán Aguirre, Fabio Daolio, Kiyoshi Tanaka, Yong Deng
2017 PLoS ONE  
The work focuses on the optimization of a large number of traffic lights deployed on a wide area of the city and studies their impact on travel time, emissions and fuel consumption.  ...  These range from statistical based methods in the 60's [3, 4] to computational intelligence based methods in the last Evolutionary design optimization of traffic signals applied to Quito city PLOS ONE  ...  Also, large chunks of the clusters Evolutionary design optimization of traffic signals applied to Quito city are spatially contiguous.  ... 
doi:10.1371/journal.pone.0188757 pmid:29236733 pmcid:PMC5728506 fatcat:wiipnnbdsjctpg5w64nrvy3sjy

A Simulation-Based Framework for the Cooperation of VMS Travel Guidance and Traffic Signal Control

Meng Li, Han Jiang, Zhen Zhang, Wei Ni, Pinchao Zhang, Jingyan Song
2014 Mathematical Problems in Engineering  
Nowadays, both travel guidance systems and traffic signal control systems are quite common for urban traffic management.  ...  Basically, we proposed a cooperative mechanism and systematic framework of VMS travel guidance and major arterials signal operations. And then a two-stage nested optimization problem is formulated.  ...  Stage II: Dynamic Programming for Offsets Optimization. The second-stage optimization problem was the arterial signal offsets optimization under the condition of fixed green time and cycle time.  ... 
doi:10.1155/2014/803647 fatcat:myijtrrftjdx5mybs24giv3xl4

Optimizing Traffic Signal Timings for Mega Events

Robert Scheffler, Martin Strehler, Marc Herbstritt
2016 Algorithmic Approaches for Transportation Modeling, Optimization, and Systems  
Most approaches for optimizing traffic signal timings deal with the daily traffic.  ...  In this paper, we present an extension of a cyclically time-expanded network flow model and a corresponding mixed-integer linear programming formulation for simultaneously optimizing traffic signal timings  ...  traffic signals and mega events [7] .  ... 
doi:10.4230/oasics.atmos.2016.8 dblp:conf/atmos/SchefflerS16 fatcat:wcszlfwsnvhdnctu3pe4p3vq3y
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