Light quadricycles are vehicles that, like other two- or three-wheeled vehicles, can be less visible and more fragile, increasing the risk of injury in the event of an accident. For this reason, it is important to follow safety rules, such as the use of the **seat belt**.

- **Use of the seat belt:** All occupants of a vehicle equipped with seat belts must use them, both on **urban roads** (within towns and cities) and on **interurban roads** (highways, expressways, and motorways). This includes drivers of light quadricycles that have a seat belt.

- **Exceptions:** Although there are some exceptions for not using the seat belt, these only apply in specific situations and generally within urban areas. However, these exceptions do not apply to light quadricycles, as they are not mentioned in the exceptions.

Therefore, the driver of a light quadricycle with a seat belt is required to use it on all types of roads, both urban and interurban.