Seat belts mandatory for front seat passengers. On the spot fines are used for some offences. You must give way to traffic emerging from the right, i.e. traffic emerging from side turnings. This rule no longer applies to roundabouts. It is forbidden to use the horn in Paris and in the larger towns.
Insurance is essential.
Electricity Most of France has switched to 220-230V AC 50Hz. If bringing shavers, travel irons, hair dryers, etc. also bring a voltage transformer. Remember the outlet prongs are shaped differently also. Entertainment Theatres, opera, restaurants, nightclubs, casinos, discos, etc. When visiting a church or religious building it is inadvisable for women to wear shorts.