A couple of days ago, this marvelous little page on frumin.net was going around pretty hard. The page describes the contents of a report from the New York Met. Transportation Council that gives traffic numbers for various routes into Manhattan, which are staggering. The summary is well done, so I’ll simply quote it here:
Just to get warmed up, chew on this – from 8:00AM to 8:59 AM on an average Fall day in 2007 theNYC Subway carried 388,802 passengers into the CBD on 370 trains over 22 tracks. In other words, a train carrying 1,050 people crossed into the <CBD every 6 seconds. Breathtaking if you ask me.
Over this same period, the average number of passengers in a vehicle crossing any of the East River crossings was 1.20. This means that, lacking the subway, we would need to move 324,000 additional vehicles into the CBD (never mind where they would all park). [...]
At best, it would take 167 inbound lanes, or 84 copies of the Queens Midtown Tunnel, to carry what the NYC Subway carries over 22 inbound tracks through 12 tunnels and 2 (partial) bridges. At worst, 200 new copies of 5th Avenue. Somewhere in the middle would be 67 West Side Highways or 76 Brooklyn Bridges.
More complete numbers are available on that site and, naturally, on the report itself. He goes on to calculate roughly the additional amount of space needed to park all the cars that the subway saves from coming onto the island, which leaves massive black blocs down that stretch from 3rd Ave to 9th and take up three times the size of Central Park.
What the author neglects to note is that the continuum does not run between the current situation and this counterfactual New York made up of huge black blotches—in fact there are possibilities that extend in the opposite direction. Right now New York is in a large part made up of those huge black boxes, it is just that they are split into a capillary grid that covers the entire city. When the streets are punctuated by blocks, it is difficult to see just how much city space is taken up by surface streets. So I got curious.
The images below were hacked together very casually and unscientifically in Photoshop, without any help from my seventh-grade art teacher. They are in no way precise or accurate—but they are illustrative of just how much precious urban space is taken up by surface streets. That’s a lot of space! And yes, we do make use of it, but think of the opportunity cost—could we make better use of precious urban land that we mostly use for baking asphalt.


I’ve said it before on this page and I’ll say it again—the first day an American urban area prohibits private cars in its limits will be a great day for the human race. Note that not every street would have to vanish immediately, to provide for access for emergency services—but every other one perhaps could be closed to provide space for public markets, parks, playgrounds, gardens, what have you. Public transportation could expand to drop nearly everyone within a short walk of their home, and covered bike thru-ways could be expanded. Private cars could be parked on the outskirts, but if high speed rail is expanded, rapid regional downtown-to-downtown transport would make this option less and less palatable over time.
As far as I’m concerned, it looks like another of those win-win-win possibilities: shared common spaces could encourage communities to form, gardens and doing away with cars could encourage public health (through exercise, diet, and respiratory benefits), the environmental impacts would be unimpeachable. And, perhaps best of all, we wouldn’t all have a strip of asphalt mini-mall outside our homes. Not all of us have cobblestone streets like Georgetown—but obviously even they could fare better.
I’m being a little dreamy, I understand—but I bet it’s closer than you think, in places like Portland, Seattle, San Francisco. We already regularly impair the efficacy of private cars, with speed bumps, one way streets, cul-de-sacs, dead ends, and so on—and for good reason. And, of course, bicycle ridership has been up this depression (they were already 75,000 on average daily in New York, or 8.6% of all traffic by number, by 1992; 20% of everyone who go over Portland’s Hawthorne bridge are on a bike). It’s a smaller step than you might think.
a.j.m