Must / Have to

1. To drive a car you must  have a driving licence.
2. While you are driving you don't have to  listen to the radio, it is not necessary.
3. You mustn't  drive without wearing a seatbelt.Wear a seatbelt is compulsory for the passengers too.
4. It is dangerous to talk on a cell-phone and drive at the same time. Drivers shouldn't  do that.
5. In some countries it is illegal to use a cell-phone in a car, in those countries drivers mustn't  use phones in their cars.
6. Drivers should  be kind to other drivers
7. But they don't have to  be kind to other drivers, it's a choice not the law.
8. In France you have to  insure your car, it's the law of the country.
9. On the road you must  respect the speed limit even if there isn't any radar.
10. Cyclists don't have to  wear a helmet but a cautious rider should have one.