This SAE Information Report provides performance and test requirements for combination pelvic/ upper torso operator restraint systems provided for off-road self-propelled work machines.

Purpose

—This document applies to 3-point and 4-point operator restraint systems (Type 2 and Type 2A) for off-road, self-propelled work machines fitted with ROPS.

Field of Application

This document applies to operator restraint systems that include seat systems of 70 kg mass or less.

For machines with seat systems of greater than 70 kg mass, such as those that include add-on control modules, it is necessary that the seat support be designed to withstand an additional force of ten times the mass of the seat system which exceeds the 70 kg mass. This force should be added to the test forces for the pelvic restraint portion of combined system.

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 (Type 2) operator restraint system is required for off-road work machines.

Rationale

—This document has been reaffirmed to comply with the SAE 5-Year Review policy.

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