The University of Southampton
University of Southampton Institutional Repository

Estimating vehicle speed using single inductive loop detectors

Cherrett, T., Bell, H. and McDonald, M. (2001) Estimating vehicle speed using single inductive loop detectors Proceedings of the Institution of Civil Engineers - Transport, 147, (1), pp. 23-32. (doi:10.1680/tran.147.1.23.40491).

Record type: Article

Abstract

This paper describes five techniques for estimating vehicle speeds using the digital output produced by a 2 m by 1.5 m single inductive loop detector sampled every 250 ms. The accuracy of each technique was then assessed on two further 2 m by 1.5 m loops fitted in single carriageways and two 2 m by 6.5 m loops spread over two carriageways. One-way ANOVA (Analysis of Variance) tests showed that there were highly significant differences between the estimation techniques in the mean deviations from the measured speeds over all four detectors during the peak period (08:00-08:50). Mean absolute percentage deviations (MAPD) from the measured speeds of between 18.8% and 47.5% were returned with an overall average of 28.4%. Settling on one technique, power regression of average loop-occupancy time per vehicle (ALOTPV) data reduced this to 22.7% based on three estimates. The poor results obtained from detector 3214KI (MAPD of 38.9%), situated immediately downstream from a signalised pedestrian crossing, indicate that estimation accuracy depends crucially on the match between the characteristics of the detector used for training and those used for testing. Despite the inaccuracies returned by some of the techniques, it was still possible to distinguish free-flow conditions and periods of queuing. The importance of estimation accuracy was not addressed.

Full text not available from this repository.

More information

Published date: 2001
Keywords: traffic engineering, transport management

Identifiers

Local EPrints ID: 39389
URI: http://eprints.soton.ac.uk/id/eprint/39389
ISSN: 0965-092X
PURE UUID: 9be3b3b0-475c-4d30-b095-eaa388cd839c
ORCID for H. Bell: ORCID iD orcid.org/0000-0002-5933-254X

Catalogue record

Date deposited: 28 Jun 2006
Last modified: 08 Sep 2017 16:31

Export record

Altmetrics

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×