Well... I haven't read such studies actually, yet. But I feel like it's safer to stay at home, and shut up, and let the villains rule the world. Kidding.
I believe that trading liberty for safety is the true danger. That's because there is no point in expecting a sense of responsibility in the mind of people without freedom. Freedom and responsibility go together, remove the former, you remove the latter.
"Your freedom to swing your fist ends when it comes into contact with my nose." I think this trite phrase applies here. You're not just risking yourself, the risk to others is very high and demonstrable.
There's an interesting article on abolishing drunk driving laws written by a libertarian which touches on some of these points here, if you're interested: http://reason.com/archives/2010/10/11/abolish-drunk-driving-...
Ron Paul 2012!
No offense but I'll take actual data analysis over some kind of Ayn Rand principals every time. The goal is to prevent crashes. I think it's dangerous to just wave things away with "not every human problem deserves a law." Again, Brown was probably right with the helmet, but not always. And in the case of cell phones he wrote "current fines and penalty assessments should be sufficient deterrent" so maybe he isn't using the same libertarian principle.
There's data and facts behind the thought. Crashes are happening because someone was talking or texting while driving.
Come on, this isn't a civil liberties issue. I'm right there with Ron Paul on the government phone taping U.S. citizens and other Patriot Act issues, but not this one.