Optimisation of dynamic motorway traffic via a parsimonious and decentralised approach

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

20 Scopus Citations
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Original languageEnglish
Pages (from-to)69-84
Journal / PublicationTransportation Research Part C: Emerging Technologies
Online published9 Feb 2015
Publication statusPublished - Jun 2015


This paper presents an optimisation framework for motorway management via ramp metering and variable speed limit. We start with presenting a centralised global optimal control problem aiming to minimise the total travel delay in a motorway system. Given the centralised global optimal control solutions, we propose a set of decentralised ramp metering and speed control strategies which operate on a novel parsimonious dynamic platform without needing an underlying traffic model. The control strategies are applied to a case on UK M25 motorway. The results show that the proposed set of decentralised control is able to deliver a performance that is close to the global optimal ones with significantly less computational and implementation effort. This study provides new insights to motorway management.

Research Area(s)

  • Cell transmission model, Decentralised control, Ramp metering, Variable speed control