Aarian Marshall reports in Wired:
80 percent of the pedestrian malls built in the US (fail). Success comes down to: be(ing) close to a major community anchor, like a university or a beach. Offer alternate transit. Limit efforts to a few blocks. And be really small—100,000 people or fewer—or really big. Like New York. The future of cities will probably have cars. But some won’t. It’s up to smart designers, armed with smart data, to figure out which ones work.