[sithu]

Generally he means addressing the problems "heavy car usage, not enough walking, and no safety for humans". Optimizing city design for people, and not for vehicles. This is generally done by increasing density, and requiring mixed-use buildings with commerce on ground level, and more public spaces and wider side walks, and dedicated lanes for bikes and public transportation.

Cars aren't going anywhere anytime soon in the US because sadly you can't function without one in the vast majority of places. It's far easier to implement this design philosophy for a growing city[1], but really hard to change the layout of a mature one, though it can be done thoughtfully [2].

[1]https://www.ted.com/talks/enrique_penalosa_why_buses_represe... [2]https://www.ted.com/talks/amanda_burden_how_public_spaces_ma...