Slow down and think.
Some ideas to decrease incidents of reckless driving would be having more billboards that draw attention to being more cautious, public service announcements on T.V., and posting anti-reckless driving ads on social media. So many people are on social media that it would not be too difficult to incorporate ads that make people more aware of the dangers of reckless driving. It would also be good to make people more aware of different types of reckless driving. Some may only think of racing or drunk driving. Speeding, texting while driving, and talking excessively with friends to the point of looking away from the road would be a couple of things to make people more aware of.