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An international review of roundabout capacity modelling

An international review of roundabout capacity modelling
An international review of roundabout capacity modelling
Roundabouts are an increasingly common form of road junction worldwide, and their effective design requires a detailed analysis of maximum vehicle throughput capacities. In this paper, the worldwide state-of-the-art in roundabout capacity modelling is examined, covering the three main methodologies on which models are based: fully-empirical, gap acceptance and simulation. It is shown that due to their limitations, each of these methodologies on their own cannot completely explain the complex behavioural and physical processes involved in roundabout entries, hence all the models require strong semi-empirical or fully-empirical bases using data obtained from their countries of origin. Differences in driver behaviour and methodologies thus result in differences in predicted capacities by the various models, and although local calibration allows some transferability, it is often limited by the availability of data or an incomplete understanding of the relationships between model parameters and capacity.
0144-1647
593-616
Yap, Yok Hoe
3a598422-0b9f-4932-86bc-ab7b7da833a5
Gibson, Helen
f3044081-b021-4f0e-b373-7ae24551c7a7
Waterson, Ben J.
60a59616-54f7-4c31-920d-975583953286
Yap, Yok Hoe
3a598422-0b9f-4932-86bc-ab7b7da833a5
Gibson, Helen
f3044081-b021-4f0e-b373-7ae24551c7a7
Waterson, Ben J.
60a59616-54f7-4c31-920d-975583953286

Yap, Yok Hoe, Gibson, Helen and Waterson, Ben J. (2013) An international review of roundabout capacity modelling. Transport Reviews, 33 (5), 593-616. (doi:10.1080/01441647.2013.830160).

Record type: Article

Abstract

Roundabouts are an increasingly common form of road junction worldwide, and their effective design requires a detailed analysis of maximum vehicle throughput capacities. In this paper, the worldwide state-of-the-art in roundabout capacity modelling is examined, covering the three main methodologies on which models are based: fully-empirical, gap acceptance and simulation. It is shown that due to their limitations, each of these methodologies on their own cannot completely explain the complex behavioural and physical processes involved in roundabout entries, hence all the models require strong semi-empirical or fully-empirical bases using data obtained from their countries of origin. Differences in driver behaviour and methodologies thus result in differences in predicted capacities by the various models, and although local calibration allows some transferability, it is often limited by the availability of data or an incomplete understanding of the relationships between model parameters and capacity.

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More information

Published date: September 2013
Organisations: Transportation Group

Identifiers

Local EPrints ID: 356876
URI: http://eprints.soton.ac.uk/id/eprint/356876
ISSN: 0144-1647
PURE UUID: 83e2c804-b7eb-452d-981c-a78e70d78479
ORCID for Ben J. Waterson: ORCID iD orcid.org/0000-0001-9817-7119

Catalogue record

Date deposited: 16 Sep 2013 13:44
Last modified: 17 Dec 2019 01:55

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