The University of Southampton
University of Southampton Institutional Repository

Geometric delay at non-signalised intersections

Record type: Monograph (Project Report)

Four separate studies of 'geometric delays' at a range of non-signalised intersections have been carried out during the past six years by the Transportation Research Group at Southampton University, under contract to the Transport and Road Research Laboratory (TRRL) and the Department of Transport (DTp). The term 'geometric delay' has been used to describe the extra time required by vehicles as they slow to negotiate an intersection. In the early studies at roundabouts and priority junctions, relationships were developed for geometric delay based on category analysis and linear regression techniques. In the later studies, however, more emphasis was put on the development of a synthetic model to simulate the speed profiles of vehicles as they negotiated the intersections. Relationships were developed for parameters such as minimum speeds and acceleration/deceleration rates, these relationships being based on readily measureable dynamic or geometric variables. The synthetic model has been extended so that it is now applicable to all forms of non-signalised intersections giving estimates of journey time as well as delay. The form and application of the model is described in detail in this report. The main features found to affect geometric delay are: (1) the extra distance which has to be travelled compared with the no-junction alternative; (2) the speed drop that occurs between the approach/exit roads and the internal sections of the intersection. (A)

Full text not available from this repository.

Citation

McDonald, M., Hounsell, N.B. and Kimber, R.M. (1984) Geometric delay at non-signalised intersections , Berkshire, GB Transport and Road Research Laboratory 42pp.

More information

Published date: 1984

Identifiers

Local EPrints ID: 75780
URI: http://eprints.soton.ac.uk/id/eprint/75780
PURE UUID: d697b508-3fa8-4553-ae1b-01be0268096c

Catalogue record

Date deposited: 11 Mar 2010
Last modified: 18 Jul 2017 23:42

Export record


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.

×