What type of assembly does a Type 2a shoulder belt represent?

A Type 2a shoulder belt is classified as an upper-torso restraint that is designed to be used in conjunction with a lap belt. This configuration enhances safety by ensuring that both the upper body and the pelvis are secured during a collision. The ability to restrict movement of the upper body helps to reduce the risk of injury by keeping the occupant firmly in place within the vehicle.

This type of assembly is particularly important in the context of vehicle safety because it combines the effectiveness of the lap belt, which secures the lower body, with the shoulder belt, which provides additional protection. Unlike simple restraints that may only secure the lap or only the upper torso, the Type 2a belt system works to provide comprehensive protection by addressing both areas simultaneously.