‘Sneckdown’ is a mash-up of “snowy” and “neckdown”. ‘Neckdown’ is urban planning jargon for a curb extension, where the road is narrowed , usually at an intersection or a pedestrian crossing. The snow part of sneckdown comes from the way snow on the ground shows where the road is—and isn’t—used. Whenever you see a snowbank on the road, imagine a curb extension in its place. These snowy curb extensions are extra space, which could be re-purposed for all sorts of things: sidewalks, plazas, greenery, bike infrastructure, you name it!