(Hours per year)
|1997 delay per peak traveler||2007 delay per peak traveler||Percentage change 1997-2007||Annual growth rate 1997-2007|
|Very large areas||43||51||18.1||1.7|
|1997 cost per peak traveler||2007 cost per peak traveler||Percentage change 1997-2007||Annual growth rate 1997-2007|
|Very large areas||666||1,084||62.8||5.0|
a A peak traveler is estimated to travel from 6:00 a.m. to 9:00 a.m. and 4:00 p.m. to 7:00 p.m.
large = over 3 million population (e.g., New York-Northern New Jersey).
Large = 1 million-3 million population (e.g., San Diego).
Medium = selected areas with 500,000-1 million population (e.g., Charlotte).
Small = selected areas under 500,000 population (e.g., Colorado Springs).
Note: See Glossary for definitions of delay and congestion cost. Methodology and data sources have been changed in 2009 and applied retroactively to past years, these figures are not comparable to those in past editions of Pocket Guide.
Source: Texas Transportation Institute, 2009 Urban Mobility Report, Tables by Population Groups, available at http://mobility.tamu.edu/ums/congestion_data/ as of August 2009 as reported in U.S. Department of Transportation, Research and Innovative Technology Administration, Bureau of Transportation Statistics, National Transportation Statistics, tables 1-63 and 1-66, available at http://www.bts.gov as of October 2009.