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Komanoff on Broadway

Charles Komanoff (he of the Balanced Transportation Analyzer; Excel file here) runs the numbers on the Broadway pedestrianization project for John Tierney:

I figure that the proposal will slow motor vehicle traffic by an average of one-tenth of one percent (1 part per thousand), averaged throughout the Central Business District, i.e., a minuscule average impact. The current average speed of 10.350 miles per hour (on weekdays, averaged over 24 hours) will slow to 10.336 mph.

Pursuant to a few posts ago, that one-per-thousand decrease shouldn’t even warrant a loss in the Level of Service!

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This entry was posted on Tuesday, March 3rd, 2009 at 12:11 pm and is filed under Congestion. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.

One Response to “Komanoff on Broadway”

  1. aaron Says:
    March 8th, 2009 at 3:20 pm

    I don’t buy it. That the decrease is not significant. .014mph looks small, but multiplied by the number of cars affected, you may be looking at a lot more drive time and fuel consumption.

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Traffic Tom Vanderbilt

How We Drive is the companion blog to Tom Vanderbilt’s New York Times bestselling book, Traffic: Why We Drive the Way We Do (and What It Says About Us), published by Alfred A. Knopf in the U.S. and Canada, Penguin in the U.K, and in languages other than English by a number of other fine publishers worldwide.

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