thought i'd just toss this in here:
http://www.nytimes.com/2013/09/05/ny...tle-speed.html
In Bloomberg’s City of Bike Lanes, Data Show, Cabs Gain a Little Speed
...according to the New York City Transportation Department, a lengthy campaign to reallocate street space for cyclists and pedestrians has produced a curious result: If anything, officials said, cars are moving more quickly in the city’s most congested areas.
Citing GPS data from the city’s yellow cabs, the Bloomberg administration said that average traffic speeds in Manhattan’s primary central business district, south of 60th Street, had increased nearly 7 percent since 2008.
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