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document
Mahajan, N. (author), Hegyi, A. (author), Hoogendoorn, S.P. (author), van Arem, B. (author)
Intelligent vehicle technologies are opening new possibilities for decentralized vehicle routing systems, suitable for regulating large traffic networks, and at the same time, capable of providing customized advice to individual vehicles. In this study, we perform a rigorous simulation-based analysis of an in-vehicle routing strategy that...
journal article 2019
document
van de Weg, Goof Sterk (author), Hegyi, A. (author), Hoogendoorn, S.P. (author), De Schutter, B.H.K. (author)
Freeway congestion can reduce the freeway throughput due to the capacity drop or due to blocking caused by spillback to upstream ramps. Research has shown that congestion can be reduced by the application of ramp metering and variable speed limits. Model predictive control is a promising strategy for the optimization of the ramp metering...
journal article 2019
document
van de Weg, Goof Sterk (author), Vu, Hai L. (author), Hegyi, A. (author), Hoogendoorn, S.P. (author)
In this paper, we develop a hierarchical approach to optimize the signal timings in an urban traffic network taking into account the different dynamics in all traffic regimes. The proposed hierarchical control framework consists of two layers. The first layer--the network coordination layer--uses a model predictive control strategy based on a...
journal article 2018
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Han, Y. (author), Hegyi, A. (author), Yuan, Y. (author), Roncoli, Claudio (author), Hoogendoorn, S.P. (author)
This paper extends an existing linear quadratic model predictive control (LQMPC) approach to multi-destination traffic networks, where the correct origin-destination (OD) relations are preserved. In the literature, the LQMPC approach has been presented for efficient routing and intersection signal control. The optimization problem in the...
journal article 2018
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Mahajan, N. (author), Hegyi, A. (author), Hoogendoorn, S.P. (author), van Arem, B. (author)
conference paper 2018
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Han, Y. (author), Hegyi, A. (author), Yuan, Y. (author), Hoogendoorn, S.P. (author), Papageorgiou, Markos (author), Roncoli, Claudio (author)
In this paper we develop a fast model predictive control (MPC) approach for variable speed limit coordination to resolve freeway jam waves. Existing MPC approaches that are based on the second-order traffic flow models suffer from high computation load due to the non-linear and non-convex optimization formulation. In recent years, simplified...
journal article 2017
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Han, Y. (author), Yuan, Y. (author), Hegyi, A. (author), Hoogendoorn, S.P. (author)
This paper proposes an extension of the discrete Lighthill–Whitham–Richards model of the cell transmission model type to reproduce capacity drop and the propagation of jam waves. Recent studies have tried to incorporate the capacity drop into discrete first-order traffic flow models for traffic optimization purposes. It was found that the inflow...
journal article 2016
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Van de Weg, G.S. (author), Keyvan Ekbatani, M. (author), Hegyi, A. (author), Hoogendoorn, S.P. (author)
Developing practicable and efficient real-time signal control strategies for urban road networks is a major challenge with significant scientific and practical relevance. For the sake of practical feasibility, many urban traffic control strategies are based on simplified models. In this way, a trade-off can be made between controller accuracy,...
conference paper 2016
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Van de Weg, G.S. (author), Hegyi, A. (author), Hoogendoorn, S.P. (author)
The development of control strategies for traffic lights, ramp metering installations, and variable speed limits to improve the throughput of road traffic networks can contribute to a more efficient use of road networks. In this project, a hierarchical controller will be developed for the improvement of the throughput of a road traffic network....
conference paper 2014
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Vreeswijk, J.D. (author), Landman, R.L. (author), Van Berkum, E.C. (author), Hegyi, A. (author), Hoogendoorn, S.P. (author), Van Arem, B. (author)
When applying dynamic route guidance to improve the network performance, it is important to balance the interests of the road authorities and the road users. In this paper we will illustrate how bounded rationality and indifference bands can be taken into account in dynamic route guidance to improve the network performance while respecting the...
conference paper 2012
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Landman, R.L. (author), Hegyi, A. (author), Hoogendoorn, S.P. (author)
Service level control is a promising strategy to realize policy objectives within road networks like improving network production while taking road user interests, livability and safety into account. In this contribution a service level-oriented route guidance control approach is presented that is able to control service levels of routes on a...
conference paper 2012
document
Landman, R.L. (author), Hegyi, A. (author), Hoogendoorn, S.P. (author)
Research in the field of evacuation management puts a strong focus on the development of optimal evacuation and control strategies. However, in operational evacuation management the means to monitor, manage, evaluate and control are limited. The authorities nevertheless have a strong need to understand the system, in order to properly guide...
conference paper 2012
document
Schreiter, T. (author), Landman, R.L. (author), Van Lint, J.W.C. (author), Hegyi, A. (author), Hoogendoorn, S.P. (author)
Few Active Traffic Management measures proposed in the past consider the distinction of different vehicle classes. Examples of vehicle-class specific measures are truck lanes and high-occupancy/toll (HOT) lanes. We propose that the distinction of different vehicle classes, with different flow characteristics and societal and economic function,...
conference paper 2012
document
Zheng, N. (author), Hegyi, A. (author), Hoogendoorn, S.P. (author), Van Zuylen, H.J. (author), Peters, D. (author)
To keep the freeway networks in a good condition, road works such as maintenance and reconstruction are carried out regularly. The resulting work zones including the related traffic management measures, give different traffic capacities of the infrastructures, which determines the travel time for road users. A work zone capacity prediction model...
journal article 2011
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Mak, W.K. (author), Viti, F. (author), Hoogendoorn, S.P. (author), Hegyi, A. (author)
Roads in the Netherlands are often heavily congested. Real-time travel time information can be a valuable instrument to reduce the impact of increasing traffic demand on travel time with advantages for traffic participants as well as for the traffic network managers. For urban roads travel time estimation is a more complex problem than for...
conference paper 2010
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Zuurbier, F.S. (author), Hegyi, A. (author), Hoogendoorn, S.P. (author)
Marginal costs in traffic networks are the extra costs incurred to the system as the result of extra traffic. Marginal costs are required frequently e.g. when considering system optimal traffic assignment or tolling problems. When explicitly considering spillback in a traffic flow model, one can use a numerical derivative or resort to heuristics...
conference paper 2010
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Hegyi, A. (author), Hoogendoorn, S.P. (author), Schreuder, M. (author), Stoelhorst, H. (author)
conference paper 2009
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Hoogendoorn, S.P. (author), Van Zuylen, H.J. (author), De Schutter, B. (author), Hegyi, A. (author)
Rapport in opdracht van het Ministerie van Verkeer en Waterstaat, Adviesdienst Verkeer en Vervoer (AVV). De toenemende complexiteit van de regeltaak vereist de ontwikkeling van geavanceerde methodes voor het ondersteunen van de beheerstaak van operators in verkeerscentrales. Deze ondersteuning beoogt de operator in staat te stellen, het...
report 2000
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