|Bicycle infrastructure available||Population (percent)||Population (size)|
|Both bike paths and lanes||26.3||52.4 million|
|Bike paths but not lanes||24.1||48.0 million|
|Bike lanes but not paths||6.5||12.9 million|
|Neither bike paths nor lanes||43.0||85.7 million|
SOURCE: National Survey of Pedestrian and Bicyclist Attitudes & Behaviors, Bureau of Transportation Statistics and National Highway Traffic Safety Administration, U.S. Department of Transportation, Washington, DC, 2002.