Print Email Facebook Twitter A Hierarchical Control Framework for Coordination of Intersection Signal Timings in All Traffic Regimes Title A Hierarchical Control Framework for Coordination of Intersection Signal Timings in All Traffic Regimes Author van de Weg, Goof Sterk (TU Delft Transport and Planning) Vu, Hai L. (Monash University) Hegyi, A. (TU Delft Transport and Planning) Hoogendoorn, S.P. (TU Delft Transport and Planning) Department Transport and Planning Date 2018-05-30 Abstract 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 simplified traffic flow model to provide reference outflow trajectories. These reference outflow trajectories represent average desired link outflows over time. These are then mapped to green-red switching signals which can be applied to traffic lights. To this end, the second layer--the individual intersection control layer--then selects at every intersection the signal timing stage that realizes an outflow which has the smallest error with respect to the reference outflow trajectory. The proposed framework is tested using both macroscopic and microscopic simulations. It is shown that the control framework can outperform a greedy control policy that maximizes the individual intersection outflows, and the control framework can distribute the queues over the network in a way that the network outflow is improved. Simulations using a macroscopic model allow the direct application of the reference outflows computed by the network coordination layer, and the results indicate that the mapping of the reference outflows to the detailed signal timings by the individual intersection control layer only introduces a small performance loss. Subject intersection coordination.link transmission modelModel predictive controlsignal timingsurban traffic network control To reference this document use: http://resolver.tudelft.nl/uuid:f56c9781-78d8-4f79-9070-88855c81c6fe DOI https://doi.org/10.1109/TITS.2018.2837162 ISSN 1524-9050 Source IEEE Transactions on Intelligent Transportation Systems, 20 (5), 1815-1827 Part of collection Institutional Repository Document type journal article Rights © 2018 Goof Sterk van de Weg, Hai L. Vu, A. Hegyi, S.P. Hoogendoorn Files PDF 2018_02_22_LML_U_SC_submi ... n_3_v1.pdf 649.75 KB Close viewer /islandora/object/uuid:f56c9781-78d8-4f79-9070-88855c81c6fe/datastream/OBJ/view