The article does expand on this in an interesting sentence. > And I’m not aware of any maps that, for example, trace the safest sidewalks for neighborhoods in

The article does expand on this in an interesting sentence. > And I’m not aware of any maps that, for example, trace the safest sidewalks for neighborhoods in South L.A. or the northeast Valley—communities that have long lived with the kind of dangerous traffic that affluent neighborhoods, like the one where my family lives, now find unbearable. While the author and I both agree that having safe neighbourhood traffic is good for local residents, it's an unfortunate property that only the rich have resources to do something about it.