This part of ISO 22915 specifies the tests for verifying the stability of industrial variable-reach trucks when handling empty or laden freight containers of 6 m (20 ft) length and longer. It is applicable to these types of industrial variable-reach trucks that are equipped with a spreader (top lift and side lift), swap bodies, or semi-trailers or other load-handling means applicable for container handling. This part of ISO 22915 does not specify requirements for industrial variable-reach trucks (see ISO 22915-11) and rough terrain variable-reach trucks (see ISO 22915-14). This part of ISO 22915 does not apply to trucks when handling a container which has a mobile centre of gravity (see ISO 3874). This part of ISO 22915 is not applicable to counterbalanced trucks with masts designed for handling freight containers, dealt with by ISO 22915-9.