"Among the cyclists who died in a collision with an automobile, most were hit by trucks, like S.U.V.s, pickups, larger box trucks or tractor-trailers. Overall, trucks were involved in half of last year’s 30 bike deaths."
Sara Lind makes a great point in the article
I don't really go over 10 mph on the road for this reason - too many variables that I may need to brake for (also, much like driving a car, I have to stop at a red light every 30 seconds anyway) - going 15 mph over a pothole vs going 8 mph is huge diff