Traffic Calming Case Study

Much hay has been made about traffic calming devices at highly conflicted intersections. And with good reason. While signage has the potential to remind users to change their behavior, devices actually work within the existing infrastructure to modify behavior itself. Such devices include cross-hatched European-style crosswalks, raised crosswalks, and bumpouts (also known as bulbouts or curb extensions). The end result is increased safety for pedestrians, cyclists, and motorists alike.
Here is an example from a complicated crossing point in Logan Square: where Kedzie meets Wrightwood. The challenges at this point are compounded by the proximity of a popular public transit hub and a well-populated senior center adjacent to the site. The first of these visuals shows the site with no traffic calming features at all. The second shows the site in its current iteration, with cross-hatched crosswalks, bumpouts, and a bicycle lane which extends the narrowed width of the automobile lane. The third offers a rendering of a future point, where the bumpouts are beautified with trees and native plants.

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Before.After_.bumpout.pdf974.7 KB