These researchers use satellite photos, AI to map crosswalks and fill gaps

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These researchers use satellite photos, AI to map crosswalks and fill gaps
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New technology could help cities to better understand walking routes and fill gaps in their pedestrian infrastructure

But in some cases, city officials lack money to invest in sidewalks or haven’t studied their pedestrian infrastructure to the same extent as streets and roads. Gathering data on sidewalks and crosswalks has historically been a labor-intensive job — taking months, in some cases — but transportation researchers are increasingly looking at ways for satellite imagery and artificial intelligence to speed the work.

A city which has very good pedestrian infrastructure, as can be seen in both Asian cities and European cities, also leads to better health outcomes. It also leads to more economic opportunities for people to participate in and a better social environment for people to participate in a lot of activities. But U.S. cities are not very convenient for pedestrians. You can see this in the increasing number of pedestrian accidents that are currently happening, post-covid.

We need to address the problem of scale so that, one, we can look at the network aspect of the problem and we can identify the gaps that are there in pedestrian infrastructure. Two, we also need to come up with transferability of these solutions. We need to be able to develop it for a city, and then we should be able to take it to any other city, and we should be able to come up with solutions with minimum amounts of training.

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