I suspect that there isn't likely to be a statistical difference in poor operation characteristics for either mode... And more to the point it doesn't matter if the point of this thread (as the OP requested) is to discuss poor cycling behavior in an attempt to improve the education/behavior of cyclists. Given the focus of the board I think it is a safe assumption that participants are cyclists... JF's post is on the point of the OP's thread--what do cyclists do wrong...