A lot of cyclists fear rear end collisions the most, probably because one feels pretty vulnerable from cars coming up from behind, but the more common car-bike collisions are the right hook (where a car passes you on the left and then makes a right turn in front of you), and the left hook, where a driver coming from the opposite direction turns left and hits the cyclist. Rear end collisions are much less common. I know it does not answer the OP's question, but expecting these right and left hooks will make for safer cycling. And sorry, I don't have crash statistics in front of me.