While working on a private web application that I call Chicago Crash Browser, I added some code to show the share of pedestrian and pedalcyclist crashes. The site offers users (sorry I don’t have a web server that can make it public) a list of the “Top 10″ intersections in terms of bike crash frequency (that’s bike+auto crash). You can click on the intersection and a list will populate showing all the pedestrian and pedalcyclist crashes there, sorted by date. At the bottom of the list is a simple sentence that tells what percentage pedestrian and pedalcyclists made up at that intersection.
I’m still developing ideas on how this information may be useful, and what it’s saying about the intersection or the people using it.
Let me tell you about a few:
Milwaukee Avenue and Ogden Avenue
I mentioned in my article Initial intersection crash analysis for Milwaukee Avenue that this intersection is the most bike crash-frequent.
23 crashes within 150 feet of the center, 2005-2010
82.61% bike crashes **
17.39% ped crashes.
Ashland Avenue and Division Street
28 crashes within 150 feet of the center, 2005-2010
46.43% bike crashes
53.57% ped crashes **
Milwaukee, North and Damen Avenues
46 crashes within 150 feet of the center, 2005-2010
39.13% bike crashes
60.87% ped crashes **
Halsted Street, Lincoln and Fullerton Avenues
38 crashes within 150 feet of the center, 2005-2010
42.11% bike crashes
57.89% ped crashes **
Montrose Avenue and Marine Drive (Lake Shore Drive ramps)
11 crashes within 150 feet of the center, 2005-2010
90.91% bike crashes **
9.09% ped crashes
Why do you think some intersections have more of one kind of crash than the other?
People walking at Milwaukee-North-Damen.
The Chicago Crash Browser can be made public if I have a host that offers the PostgreSQL database. Do you have one to offer?