This SAE Recommended Practice establishes minimum performance and test requirements for combination pelvic and upper torso occupant restraint systems provided for off-road self-propelled work machines. Purpose This document applies to 3-point and 4-point occupant restraint systems (Type 2 and 2a) for off-road@ self-propelled work machines fitted with ROPS. Field of Application A Type 2 belt is optional and may be used where upper torso restraint is desired. This document provides guidelines for@ but does not imply in any way@ that an upper torso occupant restraint system is required for off-road work machines.