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306 Bike Racks Mapped in Chicago

Posted by epicspongee on 6 October 2022 in English.

I’m continuing on my quest to map all the bike racks in Chicago, but it’s going a bit slower than I thought. Last update, I had a little less than 200 racks mapped, which is pretty good progress. This update I’ve gotten to 306. Here’s a look:

Screenshot of Overpass turbo showing 300 mapped bike racks

I got a suggestion last time to try using data from the city to help map the racks. Unfortunately, the data from the city isn’t super accurate. It can be off by as much as 2 blocks using the map on the official website. So I got data that was a little more updated, stripped the locations from it (the geocoder used was inaccurate) and punched it into Google MyMaps to see how accurate it was. It’s better, but still not something I’d want to use for actual mapping.

Another approach I’ve tried is using Mapillary. I bought a 360 camera and recorded a few tracks around town. Supposedly they’ll automatically tag stuff using computer vision (bike racks included), but none of my sequences posted more than a week ago have been tagged yet.

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