Sneckdown

The term was coined by Streetsblog founder Aaron Naparstek in 2014,[1][2] popularized by Streetfilms director Clarence Eckerson, Jr. and spread widely via social media.

[3] Other Twitter hashtags that have been used to describe snow-based traffic-calming measures include #plowza, #slushdown, #snovered and #snowspace.

[4] In Philadelphia, Pennsylvania, at Baltimore and 48th Street, a sneckdown-inspired permanent upgrade to the pedestrian environment was made in 2011.

[5] In the 1980s, some planners in Australia distributed cake flour in intersections to observe patterns of vehicle movement hours later.

[6] The practice of using snow to trace the behavior of vehicles, pedestrians, and playing children was already described in Camillo Sitte's 1901 urban design treatise.