The 2007 Thunderhead Alliance report on Bicycling and Walking is a 120 page report that you can read and download here:
It's a big report, packed with lots of data. Some of the information is surprising while some falls into the "well, duh!" category. Here are a few nuggets from the report:
p. 21 -- Bike Trips to Work by Sex: 78% Men, 22% Women
p. 22 -- Less than 1% of work trips in the U.S. are by bicycle.
p. 34 -- Walking makes up 8.7% of all trips in the U.S.
p. 35 -- Walking makes up 2.5% of all trips to work.
p. 50 -- State spend 1.54% of their Federal Transportation dollars for bicycle and pedestrian projects on average. This amounts to $2.52 per capita each year on average.
p. 85 -- Weather is not a major factor influencing cycling levels.
p. 86 -- Denser cities have higher rates of cycling and walking.
p. 88 -- Cities with higher rates of cycling and walking have lower car ownership rates.
p. 89 -- Cities with more bike facilities have higher cycling levels.
p. 90 -- Many studies now show that bicycling safety increases greatly as cycling levels rise.
p. 91 -- States with higher levels of walking have lower rates of pedestrian fatalities.
p. 95 -- States with higher levels of biking and walking have lower levels of obesity.
p. 97 -- States with higher levels of biking and walking average lower levels of high blood pressure.
p. 98 -- Diabetes rates are lowest among states with high levels of biking and walking.
p. 100 -- 3.4% of trips to work in the U.S. are by bike or foot; 9.6% of all trips in the U.S. are by bike or foot.
p. 101 -- 12.9% of U.S. traffic fatalities are bicyclists and pedestrians; 1.5% of U.S. transportation dollars go to bicycling and walking.