WIT Press


Safety Diagnostic Method In Urban Circular Intersections

Price

Free (open access)

Paper DOI

10.2495/UT040651

Volume

75

Pages

11

Published

2004

Size

343 kb

Author(s)

A. Granà

Abstract

The available knowledge of traffic safety at roundabouts is not a complete reference for geometric design; where there are organizational schemes for junctions characterized by a geometric design, quite different driving behaviours are required from those that are observable at roundabouts. This is very frequent in urban areas, where the existing constraints, particularly physical ones, often render it necessary to make \“compromise choices” relating to one or more geometric features of the roundabout (central island shape, circulatory roadway width, symmetry and number of the arms, entry width, etc). The objective of this study is to explain the accident phenomenology of this kind of road scheme, with reference to the most frequent accidents for the junctions examined in different traffic and risk exposure conditions. The study also intends to

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