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Optimisation of motorway operations via ramp metering and variable speed limits

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  • Ying Li
  • Andy H.F. Chow

Abstract

This paper presents a modelling and optimisation framework for deriving ramp metering and variable speed control strategies. We formulate the optimal control problems aiming to minimise the travel delay on motorways based upon a macroscopic cell transmission model of traffic. The optimal ramp metering optimisation is formulated as a linear programming (LP) while the variable speed control problem is formulated as a mixed integer LP. The optimisation models are applied to a real scenario over a section of M25 motorway in the UK. This paper also includes various analyses on the sensitivity of the optimal control solutions with respect to different network configurations and model assumptions.

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  • Ying Li & Andy H.F. Chow, 2015. "Optimisation of motorway operations via ramp metering and variable speed limits," Transportation Planning and Technology, Taylor & Francis Journals, vol. 38(1), pages 94-110, February.
    • Handle: RePEc:taf:transp:v:38:y:2015:i:1:p:94-110
    DOI: 10.1080/03081060.2014.976982
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    Cited by:

    1. Moez Munir & Rameez Khalid & Muhammad Latif, 2017. "Route optimization for the cement industry under the CPEC initiative," Business Review, School of Economics and Social Sciences, IBA Karachi, vol. 12(2), pages 65-83, July-Dece.

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