What does the acronym SIR stand for?

The acronym SIR stands for Supplemental Inflatable Restraint. This term refers to the airbags that are designed to supplement the seatbelt system in vehicles to provide additional protection to occupants during a crash. These inflatable restraints deploy in the event of an accident and help reduce the risk of injury by providing a cushion between the occupant and hard surfaces within the vehicle.

Understanding the function of supplemental inflatable restraints is crucial for child passenger safety technicians because it emphasizes the importance of proper usage of seatbelts and child safety seats, as well as understanding how these systems work in conjunction with standard restraints. The implementation and effectiveness of SIR systems can significantly enhance occupant safety, especially for children who are at greater risk during crashes due to their smaller stature and developing bodies.