On Nov. 26, 2016 my friend Trooper Cody Donahue was killed by a truck that failed to move over while he was investigating a crash. This is a story we hear all too often.

Prior to that crash, there was a Move Over law already in effect. So why didn't it work in that situation or countless others? I believe there are several reasons for that. Fully knowing the law is one of them; the other is n...