BS ISO 21455:2020 pdf free.Mobile elevating work platforms一Operator's controls一Actuation, displacement, location and method of operation. BS ISO 21455 This document specifies the performance requirements, location, marking and method of operation related to operator's controls on mobile elevating work platforms (hereafter referred to as MEWPs) and takes into account operator safety and ergonomics.It applies to all controls used by an operator...