Quantifying the impact of probe vehicle localisation data errors on signalised junction control


Waterson, Ben and Box, Simon (2012) Quantifying the impact of probe vehicle localisation data errors on signalised junction control. IET Intelligent Transport Systems, 6, (2), 197-203. (doi:10.1049/iet-its.2010.0113).

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Description/Abstract

This study investigates theoretical signal control algorithms based solely on probe vehicle data. Through development of a simulation system that can model urban signalised junction control using localisation probe data from all vehicles in the local area, improvements in junction operational efficiency that result from the improved input data are demonstrated for both isolated and coordinated junctions. Results from the isolated junction scenario show that the richness of the information contained within probe vehicle data means that control algorithms based just on positions and velocities of vehicles can produce 25% reductions in average delay compared to the current standard control algorithm MOVA. Results from the twin junction scenario confirm the importance of using high-level synchronisation to coordinate closely connected junctions, achieving reductions in average delays (compared to independent control approaches) of up to 40% through a process of weighting the probe vehicle data to reflect prior stage decisions of other parts of the junction. Critical to achieving these benefits, however, is the availability of high localisation accuracy probe data, with results indicating that the levels of accuracy necessary are representative of the typical performance of current in-vehicle global positioning system units, except when those vehicles are operating in urban canyon environments.

Item Type: Article
ISSNs: 1751-956X (print)
Subjects: T Technology > TE Highway engineering. Roads and pavements
Divisions: Faculty of Engineering and the Environment > Civil, Maritime and Environmental Engineering and Science > Transportation Research Group
ePrint ID: 344692
Date Deposited: 02 Nov 2012 16:35
Last Modified: 28 Mar 2014 23:21
Projects:
Improved Traffic Signal Control through Individual Vehicle Position Data
Funded by: EPSRC (EP/E045960/1)
Led by: Benedict Waterson
1 May 2008 to 31 August 2010
URI: http://eprints.soton.ac.uk/id/eprint/344692

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