ISO 22915-1:2016 series deals with the safety of industrial trucks, as defined in ISO 5053‑1, relative to their stability and the verification of that stability. For the purposes of ISO 22915, industrial trucks are wheeled, self-propelled, or pedestrian-propelled vehicles excepting those running on rails. They are either operator-controlled or driverless, and are designed to carry, tow, push, lift, stack or tier in racks. ISO 22915-1:2016 specifies basic test criteria and requirements for verifying the stability of industrial trucks, hereafter referred to as trucks. It applies to the following truck types and special conditions: a) counterbalanced trucks with mast as specified in ISO 22915‑2; b) reach and straddle trucks as specified in ISO 22915‑3; c) pallet stackers, double stackers, and order-picking trucks with operator position elevating up to and including 1 200 mm lift height as specified in ISO 22915‑4; d) single-side-loading trucks as specified in ISO 22915‑5; e) bidirectional and multidirectional trucks as specified in ISO 22915‑7; f) additional stability test for trucks operating in special conditions of stacking with the mast tilted forward as specified in ISO 22915‑8; g) counterbalanced trucks with mast handling freight containers of 6 m (20 ft) length and longer as specified in ISO 22915‑9; h) additional stability test for trucks operating in special conditions with the load substantially laterally displaced by powered devices as specified in ISO 22915‑10; i) industrial variable-reach trucks as specified in ISO 22915‑11; j) industrial variable-reach trucks handling freight containers of 6 m (20 ft) length and longer as specified in ISO 22915‑12; k) rough-terrain variable-reach trucks as specified in ISO 22915‑14; l) counterbalanced trucks with articulated steering as specified in ISO 22915‑15; m) pedestrian-propelled trucks as specified in ISO 22915‑16; n) additional stability test for trucks operating in the special condition of offset load, offset determined by utilization as specified in ISO 22915‑20; o) order-picking trucks with operator position elevating above 1 200 mm as specified in ISO 22915‑21. It also applies to trucks operating under the same conditions when equipped with load-handling attachments. ISO 22915-1:2016 does not apply to the following: - trucks handling suspended loads which may swing freely; - low-lift trucks with lift height up to and including 500 mm.