This part of ISO 13562 specifies basic tests to verify the stability of industrial variable-reach fork-lift trucks. It applies to self-propelled, seated rider operated, counterbalanced industrial variable-reach fork-lift trucks with non-slewing booms or with a slewing movement not greater than 5° either side of the longitudinal centre plane of the truck, fitted with fork arms or load-handling attachments, with a fixed or articulated chassis, that may have stabilizers, axle-locking or frame-levelling devices, and with two- or four-wheel or articulated steering systems. This part of ISO 13562 is not applicable to the above trucks when they are handling suspended loads which may swing freely.