A new macroscopic model for Variable Speed Limits

Jose Ramon D. Frejo, Ioannis Papamichail, Markos Papageorgiou, Bart De Schutter

Research output: Contribution to journalConference articleScientificpeer-review

9 Citations (Scopus)
72 Downloads (Pure)


This paper proposes a new macroscopic model for Variable Speed Limits (VSLs), combining characteristics of previously proposed models, in order to have the capability of modeling different capacities, critical densities, and levels of compliance for links affected by speed limits. Moreover, the effects of VSLs on the fundamental diagram of traffic flow are studied concluding that, at least for the considered stretch of the A12 freeway in The Netherlands, the capacity of a freeway link is decreased (and the critical density is increased) by reducing the value of the corresponding speed limit. Finally, it is shown that the VSL-induced fundamental diagram is not triangular and that the speed limit compliance can be very low if enforcement measures are not applied.

Original languageEnglish
Pages (from-to)343-348
Issue number9
Publication statusPublished - 2018
Event15th IFAC Symposium on Control in Transportation Systems - Savona, Italy
Duration: 6 Jun 20188 Jun 2018
Conference number: 15


  • Freeway Traffic Control
  • Freeway Traffic Modeling
  • Variable Speed Limit


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