Diamond turn

hideThis article has multiple issues. Please help or discuss these issues on the . (Learn how and when to remove these template messages) The examples and perspective in this article deal primarily with Australia and do not represent a worldwide view of the subject. You may , discuss the issue on the , or create a new article, as appropriate. (September 2012) (Learn how and when to remove this template message) This article relies largely or entirely on a single source. Please help by introducing citations to additional sources. Find sources:  –  ·  ·  · scholar · JSTOR (September 2012) (Learn how and when to remove this template message)

A diamond turn is a kind of turning manoeuvre used by motor vehicles at intersections.

Details[]

If a driver approaches a four-way intersection and wishes to make a turn opposite of their side of the road (e.g. a right turn if driving on the left side of the road, as in the UK or Australia), they should turn in a wide arc that passes close to the centre of the intersection.^[1]

This is nowadays the standard type of driver's-side turning manoeuvre at a four-way intersection. In particular, at intersections with traffic lights, it enables a traffic signal phase to allow traffic approaching the intersection from two opposing directions to both turn right simultaneously without colliding.

The diamond turn is distinguished from a historically required manoeuvre wherein drivers simultaneously turning right from opposing directions were required to turn around a silent cop in the centre of the intersection, which resulted in the two vehicles looping past one another with their driver's sides adjacent.^[1] This type of turn was eliminated, as it was unsuitable for intersections with traffic lights that used simultaneous right-turn green light phases for more than one approaching street.^{[citation needed]}

References[]

This road-related article is a stub. You can help Wikipedia by .

• v
• t