Provides rules for the intended use of the lift by persons with impaired mobility in order to assist the evacuation of a building. To achieve this objective, the selected lift(s) must be incorporated within an overall building design that includes all the usual stairs and escape routes without any reduction in their quantity or capacity. Also gives the special provisions and safety rules to assist persons with impaired mobility to safely evacuate a building using lifts in relative safety with the help of suitably trained assistants.