A large number of restrained occupants of vehicles in the United States suffer severe head and neck injuries during rollover accidents. Occupant protection in rollover impacts can be provided through the use of many components, one of which is the restraint system. The ability of various restraint systems to control occupant kinematics and keep occupant heads away from potential injurious loading conditions is important in providing protection to restrained occupants in rollover impacts. An experimental study was conducted to assessthe ability of various restraints to control human volunteer vertical motions.