Who pays the fine for not wearing a seat belt if sitting in the front?

If a front-seat passenger is not wearing a seat belt and the vehicle is pulled over, the responsibility for the fine typically falls on the passenger, as they are the one violating the seat belt law. However, in some jurisdictions, the driver may also receive a fine for allowing an unbelted passenger. The specifics can vary by state or country, so it's important to check local laws for accurate information.