Illinois Driving Permit Practice Test 2025 - Free Driving Permit Practice Questions and Study Guide

The primary purpose of seat belts is to prevent injury in case of an accident. Seat belts are designed to hold passengers securely in their seats during a collision, reducing the risk of ejection from the vehicle and minimizing the impact forces experienced by the occupants. By ensuring that individuals remain in their designated seating positions, seat belts help distribute crash forces more evenly across the body, particularly across stronger areas like the pelvis and ribcage.

While comfort, speed control, and driver alertness are important factors related to safe driving, they do not represent the fundamental function of seat belts. Their essential role is to enhance occupant safety, making them one of the most effective methods of reducing injury and fatalities in vehicle accidents. The effectiveness of seat belts as a safety feature is well-documented, highlighting their critical importance in road safety.