@rsynnott @LauraLangdon @mekkaokereke @bluejekyll In general, anytime you find something in the U.S. which seems counterproductive but you can't easily explain why we put up with it, assuming it's due to racism is a safe bet.
American suburbs grew after WWII but especially after key court cases found that white people had to share city infrastructure. Those suburbs were designed prevent walking & transit which was increasingly identified with being poor/brown.
https://kinder.rice.edu/urbanedge/racism-has-shaped-public-transit-and-its-riddled-inequities