Platoon-based macroscopic model for intelligent traffic flow

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Abstract

This paper proposes a macroscopic model to describe the dynamics of intelligent traffic flow where intelligent vehicles are driving closer to each other than manual vehicles and operating in a form of many platoons each of which contains several vehicles. The model is developed from a car-following model which allows us to obtain well tractable macroscopic equations for such platoon-based traffic operation. A linear stability diagram is constructed from the developed model based on the linear stability method for a certain model parameter set. It is found analytically that platoon-based driving behaviour of intelligent vehicles enhances the stabilisation of traffic flow with respect to a small perturbation. Numerical simulation of an open freeway with an on-ramp bottleneck supports our analytical results.We have argued that the newly developed macroscopic model will provide a better insight into the dynamics of intelligent traffic flow.

Original languageEnglish
Pages (from-to)153-169
Number of pages17
JournalTransportmetrica B: Transport Dynamics
Volume1
Issue number2
DOIs
Publication statusPublished - 2013
Externally publishedYes

Keywords

  • Generalised force model
  • Intelligent vehicles
  • Linear instabilities
  • Macroscopic traffic model
  • Platoon operation

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