Final answer:
Seat belt laws are in place to protect individual safety and reduce societal burdens from accidents; fines vary by jurisdiction but serve as a deterrent for non-compliance.
Step-by-step explanation:
Government imposes seat belt laws to ensure the safety of individuals in vehicles, especially young drivers. The fine for failing to wear a seat belt can act as a deterrent, helping to prevent accidents and reduce the burden on society to care for those injured due to not wearing a seat belt. Specifically, for a vehicle operated by a teenage driver, the fine varies depending on the jurisdiction but is designed to enforce compliance with the regulations to protect the driver's welfare as well as the common welfare of society.