Traffic Safety: A PCN Classic

I hear North Dakota is the least-visited state in the union, but I'm doing my best to buck that trend. I'm spending two days in Bismarck with folks from the Department of Transportation, exploring ways to use Positive Community Norms to make their roads safer. PCN can be used to reduce driving after drinking (as I did in a statewide campaign in Montana), increase seatbelt use, and combat texting and driving. Unfortunately, nothing has yet been invented that can keep me from singing along with classic rock radio in my rental car.