What function do load limiters serve in seat belts?

• A. They lock the seat belt in place at all times
• B. They increase tension in the seat belt
• C. They release additional material under high force
• D. They make the seat belt easier to fasten

Answer: (C)

Load limiters in seat belts are designed to enhance passenger safety during a crash. They function by allowing a predetermined amount of seat belt webbing to release or "give" under high force conditions, such as during a collision. This release helps to reduce the risk of injury by decreasing the force that is applied to the occupant’s body. By managing the tension on the seat belt, load limiters can help prevent severe injuries that might occur if the seat belt were to hold too tightly when the vehicle decelerates abruptly.

In contrast, the other choices do not accurately describe the function of load limiters. For instance, while seat belts do lock in certain situations, that function is different and not related to load limiting. Similarly, increasing the tension in the seat belt or making it easier to fasten would not be the purpose of a load limiter; rather, those actions could potentially increase the risk of injury during a crash.