Abstract: A passive passenger restraint system adapted for use with aerial, cable-supported chairlifts includes a passive restraint that is driven by the motion of the chairlift. A seatbelt automatically deploys across the laps of the passengers. The seatbelt restrains the passengers until the end of the trip and then releases the restraint just before unloading the passengers. After unloading, the restraint system automatically resets for the next passengers and the next deployment cycle. A similar passenger restraint system for use in vehicles restrains passengers individually using a shoulder belt and a lap belt.