I'm normally not a big fan of the Vatican, despite (or perhaps due to) being raised a Roman Catholic. I think the Church tends to stick its nose in places it doesn't belong, like politics and the like. But here's a something that the Church did right: the Motorists Ten Commandments.
1. You shall not kill.I don't have much hope that this is going to be observed by anyone, but at least they're trying something.
2. The road shall be for you a means of communion between people and not of mortal harm.
3. Courtesy, uprightness and prudence will help you deal with unforeseen events.
4. Be charitable and help your neighbor in need, especially victims of accidents.
5. Cars shall not be for you an expression of power and domination, and an occasion of sin.
6. Charitably convince the young and not so young not to drive when they are not in a fitting condition to do so.
7. Support the families of accident victims.
8. Bring guilty motorists and their victims together, at the appropriate time, so that they can undergo the liberating experience of forgiveness.
9. On the road, protect the more vulnerable party.
10. Feel responsible toward others.