ICBC has some great information on their website about vehicle crashes. I took a look at it a few weeks ago and found out some interesting things. It appears that you are maybe 50-100% more likely to be in an accident if you're riding a bike. This is an estimate from me, because the icbc stats don't give average number of kms travelled by vehicle type. So while the % of motorcycles licensed that get in accidents is only slightly more than cars, obviously the amount of kms travelled by cars is higher. Something like 65% of mc accidents occur in intersections (no suprise there). If I remember correctly, the most common factors that play a role in mc accidents is opposing vehicle turning left into the bike and bike speed. Most accidents occur during dry and clear weather (not suprising about the dry conditions: many motorcyclists don't ride in the rain). The stats were actually quite reassuring because it becomes quite clear that by taking a few precautionary steps, you can really limit your exposure to possible accidents. Again, there is no suprise to this but it is nice when theory is backed up by science.
One factor I am very curious about is the type of motorcycle involved in accidents, icbc doesn't track this info. Has anyone heard or seen stats on say the difference between sportbike accidents and cruiser accidents? Or is there anyone that pays attention to this kind of stuff that can offer an estimate?
If you can't find the stats on the icbc website, let me know and I'll get the link for you.