Congestion Relief: It’s About Your Health

The mayor will have to deal aggressively with a vexing problem, traffic congestion. If that piece of the plan falls short, the rest of Mr. Bloomberg's vision won't much matter. In just a couple of decades, New York is expected to add nearly a million more people. To have any hope of keeping people moving, the city will need to take real and substantial action to unclog its roads - including some form of congestion fee and other disincentives to driving on the busiest streets.

Besides helping business and boosting the general quality of life, congestion relief would also produce cleaner air, to the enormous benefit of public health, a fact that has so far mostly been missed in the debate over congestion pricing. But a newly released report from Environmental Defense, a nonpartisan group, is likely to give these issues more prominence.

The report shows that vehicle emissions - especially dangerous diesel soot - can pollute the air as far as 1,500 feet from the source. In New York City, that means it's hard to escape them, which is troubling in a city with high asthma rates. And not just asthma but lung problems, as well as heart disease, have been linked to vehicle emissions, which are also thought to contribute to strokes and some kinds of cancers.

That is all worth considering as Mr. Bloomberg's team tries to balance good policy with what is politically achievable.