Texting While Driving: Engineering Solutions?

Psychology Today blogs here on some of the new engineering methods being used to stop texting while driving, and comes to an interesting conclusion regarding "shock" video PSAs:

Gory shock films (fear appeals) sure are effective. Everyone knows that. Except if you look at anything remotely approaching a scientific standard of testing, you know that these persuasion tactics have little or no effect on actual behavior leading to fewer accidents and deaths. They just make the folks doing the scolding feel good about themselves.