- Pedestrian scramble
A pedestrian scramble, also known as a Barnes Dance or exclusive pedestrian phase, is a
pedestrian crossing system that stops all traffic and allows pedestrians to cross intersections in every direction at the same time. It was first used in Kansas City andVancouver , Canada in the late 1940s, and has since then been adopted in many other cities and countries. It is most recently adopted in Toronto.Naming
The name Barnes Dance comes from
Henry Barnes ; though he was not the inventor of the pedestrian scramble, he was the first to use the system on a large scale. In hisautobiography , "The Man With the Red and Green Eyes", he writes that the phrase was first coined by a City Hall reporter, John Buchanan.In
Japan , where over 300 such intersections exist, it is known as a nihongo|scramble crossing|スクランブル交差点|sukuranburu-kōsaten.In
Toronto ,Canada , the intersection ofYonge Street and Dundas Street, adjacent toYonge-Dundas Square , is a scramble intersection. More intersections in Toronto are expected to follow this method of pedestrian crossing.Pros and cons
The pedestrian scramble has both negative and positive aspects. It requires that non-pedestrian traffic in all directions be stopped, creating
lost time for motorists and reducing an intersection's vehicular capacity, although it may be mitigated by time gained removing pedestrian directional signals (e.g. east-west and north-south). It is also often difficult to ensure that an intersection is free of pedestrians at the end of the scramble time. For these reasons, some traffic engineering textbooks discourage the pedestrian scramble except in low-volume rural and suburban intersections where there may be a safety benefit. [Roess, Prassas, & McShane, "Traffic Engineering", 3rd Edition (2004), ISBN 0-13-142471-8]However, intersections with high volumes of turning traffic as well as high pedestrian volumes can greatly benefit from a pedestrian scramble. Capacity decreases caused by lost time can be recaptured by eliminating capacity decreases caused by right- or left-turning vehicles blocking the intersection while waiting for pedestrians to cross.
ee also
*
Traffic light References
External links
* [http://www.fhwa.dot.gov/infrastructure/barnes.htm The Barnes Dance] (U.S.
Federal Highway Administration )
* [http://indiana.typepad.com/fwob/2006/12/i_posted_a_comm.html Historical commentary and photo of Barnes Dance used in Fort Wayne, Indiana at Christmas in the 1950s and 1960's.] (Fort Wayne Observed)
* [http://network.nationalpost.com/np/blogs/toronto/archive/2008/07/23/hall-monitor-a-new-way-to-cross-the-street-diagonally.aspx National Post article on Toronto's first pedestrian scramble]
* [http://vimeo.com/1626058?pg=embed&sec=1626058 Time-lapse video of scramble intersection at Yonge and Dundas, Toronto]
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