What are the national transportation-related surveys that include bicycling?
United States Census, 1990 & 2000:
Percentage of journeys to work by bicycle in 1990: 0.41% (466,856 people)
Percentage of journeys to work by bicycle in 2000: 0.38% (488,497 people -- data are based on a sample and are subject to sampling variability)
2001 National Household Travel Survey
National Sporting Goods Association, 2006:
Millions of people aged seven and older who participated in the following activities more than once:
- Exercise Walking: 87.5
- Running/Jogging: 28.8
- Hiking: 31.0
- Bicycle Riding: 35.6
- Mountain Biking: 8.5