en:Car Terms:A:Active Head Restraints GB/EN

SEAT Glossary

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Active Head Restraints - AHR

Active Head Restraints is a system that comes into action only in a rear-end crash. The inertia caused by an impact from the rear presses the upper body into the back of the seat. This movement triggers the back rest and lever, which bring the headrest forward automatically to decrease the distance between head and headrest. This reduces risk of injury by preventing stretching of the neck vertebrae. Once triggered, the system can be reversed at no cost.