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Macroscopic traffic flow modelling and ramp metering control using Matlab/Simulink

Taylor, C. James and McKenna, Paul G. and Young, Peter C. and Chotai, Arun and Mackinnon, Mike (2004) Macroscopic traffic flow modelling and ramp metering control using Matlab/Simulink. Environmental Modelling and Software, 19 (10). pp. 975-988. ISSN 1364-8152

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Abstract

Computer programs to simulate traffic flow offer an opportunity to evaluate new strategies for reducing delays, congestion, fuel consumption and pollution. This paper describes a Statistical Traffic Model or STM, which is based on accepted macro-modelling concepts, such as the conservation of vehicles and the fundamental traffic diagram. In this case, the model is constructed using the well known Matlab/Simulink™ software package, so providing an integrated approach for data processing, graphical presentation of data, control system design and macroscopic simulation in one straightforward to use, widely available environment. To illustrate the methodology, the STM is applied to a section of the M3/M27 Ramp Metering Pilot Scheme in the UK. This Highways Agency sponsored project, based in the Southampton area, utilises traffic lights at the on-ramp entrances to regulate access to the main carriageway of the motorway, in an attempt to maintain flow close to the capacity. The paper utilises the model to help design a locally-coordinated ramp metering algorithm, based on proportional-integral-plus (PIP) control methods. In this manner, the STM proves particularly valuable for the application of multi-objective optimisation techniques in the design of new traffic management systems.

Item Type: Article
Journal or Publication Title: Environmental Modelling and Software
Uncontrolled Keywords: Fundamental traffic diagram ; Macroscopic simulation model ; Matlab/Simulink ; Proportional-integral-plus control ; Statistical traffic model
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Departments: Faculty of Science and Technology > Engineering
Faculty of Science and Technology > Lancaster Environment Centre
Faculty of Science and Technology
ID Code: 2678
Deposited By: ep_importer
Deposited On: 27 Mar 2008 09:24
Refereed?: Yes
Published?: Published
Last Modified: 24 Jan 2014 05:16
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/2678

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