This document specifies the minimum ergonomic and structural integrity requirements for steps and handrails used by staff to access the following heavy rail vehicles: passenger vehicles; vans; locomotives; power units of rolling stock; passenger-rated car carriers. This document defines the required spaces necessary for shunter handrails and shunter s stand and gives references for the required spaces necessary for handling of screw couplings with side buffers. For staff access, it defines footsteps, handrails and their dimensions and free spaces. To fulfil the requirements for loads which are applied by the staff, it defines dimensions and requirements for materials or design loads. This document also defines the general requirements of steps and handrail for access to external equipment, for example windscreens, wipers or external lights.