Once engaged, the restraining device shall not release or fail when the device is subjected to an acceleration of 20 g., rein the longitudinal direction opposite to that in which the seat folds. Inflatable Seat Belts: A relatively new innovation rein the realm of seat belt technology is the inflatable http://pandora.nla.gov.au/external.html?link=https://www.ledteks.com/seatbelt-and-safety-belt-webbing