There's just no way that excessive speed isn't a factor in almost all these crashes (not accidents). Add in our local problem with drunk driving, and we've got the causes pretty much locked in. I used to drive a delivery truck on London Rd., and far less than 10% drive a safe speed.

Now, about that rumble strip idea. The roadways of Lame County don't have continuous, fixed-width shoulders. That means that sometimes cyclists can ride on the shoulder, and sometimes they must take the lane. Adding rumble strips makes this transition difficult enough that most cyclists will just take the lane and stay there, which would not be most folks preferred option in the absence of rumbles. Also, consider what happens when tourists come through. Bike touring is a growing part of our local tourism dollars and we shouldn't be creating hostile infrastructure for these visitors who tend to spend more money than most.