Is it obligatory to wear safety belts in a utility vehicle?

1. Yes, it is obligatory on freeways only, for both the driver and the passengers
2. Correct answer: Yes, it is obligatory on any type of road, for both the driver and all the passengers
3. Yes, but it is only obligatory on dirt roads, for both the driver and the passengers
4. No, it is not obligatory to wear safety belts

WhyOn a goods tractor the driver and all passengers wear seat belts on every type of road.