Traffic flow optimisation in presence of vehicle automation and communication systems - Part I: A first-order multi-lane model for motorway traffic

Claudio Roncoli*, Markos Papageorgiou, Ioannis Papamichail

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

51 Citations (Scopus)

Abstract

Proposed or emerging vehicle automation and communication systems (VACS) may contribute to the mitigation of motorway traffic congestion on the basis of appropriate traffic control strategies. In this context, this paper presents a novel first-order multi-lane macroscopic traffic flow model for motorways which is mainly intended for use within a related optimal control problem formulation. The model's starting point is close to the well-known CTM (cell-transmission model), which is modified and extended to consider additional aspects of the traffic dynamics, such as lane changing and the capacity drop, via appropriate procedures for computing lateral and longitudinal flows. The model has been derived with a view to combine realistic traffic flow description with a simple (linear or piecewise linear) mathematical form, which can be exploited for efficient optimal control problem formulations, as described in a companion (Part II) paper. Although the model has been primarily derived for use in future traffic conditions including VACS, it may also be used for conventional traffic flow representation. In fact, the accuracy of the proposed modelling approach is demonstrated through calibration and validation procedures using real data from an urban motorway located in Melbourne, Australia.

Original languageEnglish
Pages (from-to)241-259
Number of pages19
JournalTransportation Research Part C: Emerging Technologies
Volume57
DOIs
Publication statusPublished - 1 Aug 2015
MoE publication typeA1 Journal article-refereed

Keywords

  • Model-based control
  • Motorway traffic control
  • Multi-lane traffic models
  • Traffic flow modelling

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