This document specifies the safety requirements for slewing and non-slewing rough-terrain variable-reach trucks defined by ISO 5053-1 (hereafter referred to as trucks) and their integrated interchangeable work platforms having front guards that can be opened for particular operations at height (hereafter referred to as work platform). Controls can be also provided under specific circumstances at the operating position in the enclosed cab of the truck. This document deals with the significant hazards, hazardous situations and events relevant to the combination when it is used as intended and under conditions of misuse which are reasonably foreseeable. The significant hazards covered by this document are listed in Annex A. This document does not address hazards which may occur: a) when using non-integrated work platforms or other attachments not designed for lifting persons; b) when handling suspended work platforms which may swing freely; c) when operating underground or in potentially explosive atmospheres. This document does not cover trucks equipped with work platforms intended for leaving and re-entering at height.