Paul Krugman notes on his blog that while he is favor of NYC’s move to turn Times Square into a walking only area, he’s not sure who the move is for, as “nobody goes there-it’s too crowded.”

Krugman references my favorite quote about congestion from Yogi Berra. As Brian Taylor pointed out in a very good paper in the Journal of the American Planning Association, Berra captured an essential conundrum from urban economics for urban planning newfound efforts to “contain sprawl.” That contradiction comes down to a) congestion is a sign of a successful place within cities (the “it’s too crowded” part), at the same time b) that same congestion and place intensity provides the demand for decentralization–the “nobody goes there” part.

This contradiction makes it difficult to deliver on the “congestion relief” promises that many people make on behalf of compact urbanization— one of the key elements of sustainable city ideas. Los Angeles may be everybody’s favorite whipping boy for auto congestion, but DC, New York, Boston and Chicago all have congestion both on the road and elsewhere: there’s never a seat any Starbuck’s off DuPont Circle, for example, and the sidewalks are uncomfortably crowded in New York at certain times of day. The Mexico City subway or the trains in Japan–or in most global cities other than LA—are simply jammed.

I’m not saying that auto congestion is the same for the environment as these other forms of congestion–it’s not–but as Taylor points out, places that we sustainable urbanists love–like New York–have pretty bad traffic congestion, and that traffic congestion is part of the place’s vibrancy and a measure of its success–not its failure.

Thus our sustainable cities of the future are likely to be crowded–very crowded if population growth continues. Most Americans, even those who live in New York, have no idea what real megacity crowding is like. The the demand for decentralization will grow stronger as we densify, even as we try to pack a whole bunch of amenities into our compact, walkable new developments, so long as there is income and wealth to support purchasing more space in a crowded world.

Taylor, Brian D. 2006. “Putting a Price on Mobility: Cars and Contradictions in Planning,” Longer View, Journal of the American Planning Association, 72(3): 279-284.