I would say "other" or choose two the first two answers, i.e.:
Everybody should, today, have the common sense to wear a seatbelt in a car, whether as passenger or as driver. Sadly enough, too many people seem to lack every common sense on the roads and streets, and that is why justice, police and governments need to impose and enforce laws.
There have been quite a few "studies" and "analyses" since very long, telling about certain changes in people, as soon as they are driving a car ...