This part of ISO 22915 specifies tests for verifying the stability of — pallet stackers, — double stackers, and — order-picking trucks with an operator position elevating up to and including 1 200 mm lift height, measured from the ground to the floor of the platform. It is applicable to these types of industrial truck, whether with tilting or non-tilting masts or fork arms, having a rated capacity up to and including 5 000 kg. It is also applicable to such trucks operating under the same conditions when equipped with load-handling attachments and to order-picking trucks with an elevating operator's position up to and including 1 200 mm lift height when equipped with an additional load-lifting device(s).