My parents wanted to make sure that I would never drink & drive. On top of education about the disaster that can be caused by DUI, they also structured incentives to make it a dominant strategy for me to avoid drinking & driving.
The rule in our house went like this: if I were ever in a situation where I felt that I should not drive home, all I had to do was call my parents and they would come and get me. No questions asked, no threat of punishment. Let me repeat: I would NOT get in trouble for getting wasted as long as I was responsible and called for a ride home. On the other hand, if I were to drink & drive, then consequences would be severe if they found out. There is a high probability that they would find out since I live at home and my mom's nose could serve as a breathalyzer. They would be alerted to my return home by the alarm, so there's not a good way that I could have hidden intoxication upon return home. Even if I could have hidden intoxication with probability p, driving drunk would impose other costs on myself and others and I would always have the dominant strategy to avoid drunk driving.