Sustainable Streets Index

August 20, 2012, 2pm PDT
With New York's fleet of more than 13,000 taxi cabs transmitting Global Positioning System (GPS) data, the city's Department of Transportation has been able to develop a highly detailed picture of traffic patterns in the Big Apple.
The Wall Street Journal
March 26, 2010, 2pm PDT
New York City's second annual Sustainable Streets Index adds a wealth of data in support of green transportation and street safety.
Streetsblog