Originally Posted by
LesterOfPuppets
Per mile is the best way to calculate risk for commuting.
For pleasure riding or riding for exercise, you'll want to go with time spent doing the activity.
Assuming you're trying to zero in on your personal risk.
Not necessarily.
De Clarke's Personal Opinion (isn't bisque beautiful?)
There's a curious phenomenon that many transit analysts have noticed: most people spend about the same amount of time commuting to work regardless of the mode of transport. That amount of time is somewhere between 30 minutes and just over an hour.
Anyway, wphamilton's statistics that worry him so are also not just commuting miles. They include all riding/driving. The driving also includes longer, highway trips that might be safer on a per-mile than short trips.