I agree with mechBgon's philosophy on the steady/flashing argument. Not only does it make sense to me.....it saves on batteries too.
And something I've always wondered about the moth effect with the drunk driving.....if there's something to it you would think there would be a lot of those posts that hold the signs that have a yellow llight that flashes (to warn of a stop sign at a major intersection or a traffic light intersection ahead) would be hit right and left. They are flashing and in place 24/7.