Ask HN: What is “the answer” to distracted driving due to cell phones?

It seems like more and more I notice people driving while looking at their cell phones. Even at stop lights when people just "quickly check" their phones it distracts them from noticing the lights change and then only a few cars getting through on green and several more running the red. What's the "best answer" to this dilemma in your opinion? Is it steeper fines if caught? More enforcement? Regulation disabling devices if/when certain conditions are detected? It's getting to where someone leaving the bar after a few drinks but focusing on driving is better at driving then a completely sober person looking at their phone.