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Lateral position of traffic negotiating horizontal bends

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Gunay, Banihan and Woodward, David (2007) Lateral position of traffic negotiating horizontal bends. PROCEEDINGS OF THE INSTITUTION OF CIVIL ENGINEERS-TRANSPORT, 160 (1). pp. 1-11. [Journal article]

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URL: http://www.icevirtuallibrary.com/content/article/10.1680/tran.2007.160.1.1

Abstract

The lateral position of vehicles at horizontal curves and roundabout circles has been studied, and it has been observed that drivers tend to straighten their travel path as much as possible when negotiating these bends in a corner-cutting fashion. In addition to skid resistance loss, this behaviour results in the early scuffing and removal of road markings. Preliminary data were collected in Northern Ireland at eight different sites over 15 lanes in total. It was found that the expected geometrical location of the wheel path is not the same as the actual observed location at certain sections of highways. On horizontal curves, the most travelled wheel path is shifted towards the convex side of the curve, and this shift increases with decreasing radius, such as at roundabouts, where it reaches a maximum displacement. This shift was about 140 cm in the outer circles of roundabouts and about 60 cm in the inner circles. For horizontal curves the figure was in the region of 30 - 40 cm.

Item Type:Journal article
Faculties and Schools:Faculty of Art, Design and the Built Environment
Research Institutes and Groups:Built Environment Research Institute
Built Environment Research Institute > Centre for Research on Property and Planning (RPP)
ID Code:3643
Deposited By:Dr Banihan Gunay
Deposited On:16 Dec 2009 16:00
Last Modified:21 Feb 2014 11:35

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