Integrated motorway traffic flow control

Research output: Chapter in Book/Report/Conference proceedingConference contributionProfessional


  • Ioannis Papamichail
  • Georgia-Roumpini Iordanidou
  • Claudio Roncoli

  • Markos Papageorgiou

Research units

  • Technical University of Crete


The development and deployment of simple, yet efficient, coordinated and integrated control tools for motorway traffic control remains a challenge. A generic integrated feedback-based motorway traffic flow control concept has been proposed recently by the authors of this paper. It is based on the combination and suitable extension of control algorithms and tools proposed or deployed in other studies, such as ramp metering or VSL (Variable Speed Limit)-enabled cascade-feedback mainstream traffic flow control, and allows for consideration of multiple bottlenecks. The new controller enables coordination of ramp metering actions at a series of on-ramps, as well as integration with VSL control actions towards a common control goal, which is bottleneck throughput maximization. While doing this, the approach considers a pre-specified (desired) balancing of the incurred delays upstream of the employed actuators, via a suitably designed knapsack problem. Despite the multitude of the offered configurations, options and possibilities, the generic control algorithm remains simple, efficient and suitable for field implementation. The control algorithm is demonstrated and evaluated using validated macroscopic traffic flow models for two case studies and for a number of different scenarios.


Original languageEnglish
Title of host publicationProceedings of the 8th International Congress on Transportation Research in Greece (ICTR 2017)
Publication statusPublished - 2017
MoE publication typeD3 Professional conference proceedings
EventInternational Congress on Transportation Research - Thessaloniki, Greece
Duration: 27 Sep 201729 Sep 2017
Conference number: 8


ConferenceInternational Congress on Transportation Research
Abbreviated titleICTR

    Research areas

  • traffic management, integrated motorway traffic flow control, ramp metering, mainstream traffic flow control, variable speed limits, feedback control, delay balancing

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