Study Results: Exponent Consulting, 1998
Activity Fatalities per Million Hrs
Skydiving 128.71
General Aviation 15.58
On-road Motorcycling 8.80
Scuba Diving 1.98
All Causes of Death, Average 1.53
Swimming 1.07
Snowmobiling 0.88
Passenger Cars 0.47
Bicycling 0.26

per pro-bicycle commuting website.