The Office of Sustainable Development in Portland, Oregon, has decided that one of the best ways to cut down on greenhouse-gas emissions is by fostering what it calls the “20-minute neighborhood.”

Now that parking mandates are falling at an accelerating clip, here's a look at the fountainhead of parking reform.

After many decades of financial bias in favor of single-use buildings, the pendulum has begun to move back toward mixed-use and its superior convenience.