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Authored by: Keith M. Wolhuter

Geometric Design of Roads Handbook

Print publication date:  April  2015
Online publication date:  October  2015

Print ISBN: 9780415521727
eBook ISBN: 9781482288728
Adobe ISBN:


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Road networks comprise links and nodes. The nodes are the points at which links (highways, roads or streets) cross. The three general types of crossings are at-grade, grade separations without ramps and grade separations with ramps – otherwise interchanges. They are referred to in most countries as intersections, differentiating between three-legged, four-legged and multi-legged intersections although, in the United Kingdom, reference is to three-, four- and multi-armed junctions. In this book, reference is to ‘intersections’ and ‘legs’.

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