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A sneckdown〔http://www.streetfilms.org/street-lessons-from-a-blizzard/〕 or snowy neckdown〔http://www.streetfilms.org/snowy-neckdowns-redux-winter-traffic-calming/〕 is effectively a curb extension caused by snowfall. A natural form of traffic calming, sneckdowns show where a street can potentially be narrowed to slow motor vehicle speeds and shorten pedestrian crossing distances. Coined by Streetsblog Founder Aaron Naparstek,〔()〕 popularized by Streetfilms Director Clarence Eckerson, Jr. and spread widely via social media,〔http://www.streetfilms.org/the-complete-origin-of-the-sneckdown/〕 the term first appeared on Twitter on January 2, 2014 at 11:19pm EST.〔https://twitter.com/naparstek/status/418959862354038784〕 Other Twitter hashtags that have been used to describe snow-based traffic-calming measures include #plowza #slushdown #snovered and #snowspace. ==Benefits== * Shortens pedestrian crossing time * Highlights unused road space * Calms vehicle traffic * Allows planners and road engineers to clearly see possible modifications to road structures * Encourages slower vehicle speeds, increasing safety for all road users including pedestrians 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Sneckdown」の詳細全文を読む スポンサード リンク
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