What is a Type 1 seat belt assembly?

A Type 1 seat belt assembly is specifically defined as a lap belt for pelvic restraint. This type of seat belt is designed to secure the occupant's lower body, preventing excessive movement of the pelvis in the event of a collision. It functions mainly by firmly holding the occupant across the hips and is crucial for minimizing the risk of injury to the lower body during a crash.

This classification stems from the broader categorization of seat belts, where different types are distinguished based on their design and function. A lap belt is often utilized in various vehicle settings, including older vehicles and some types of seating arrangements where a more complex restraint system may not be present. Understanding this foundational aspect of seat belt design is critical for automobile safety inspectors, as it reflects on compliance with safety regulations and best practices in vehicle safety inspections.