b) The clearance gauge includes a safety margin of two (2) metres from the centre of a track
and 4.5 metres from the top of the rails. This shall include, at least, one (1) metre away
from the platform edge when the platform screen door(s) and/or the emergency egress
door(s) of a platform is/are opened during maintenance activities.
c) Any personnel on or near a track must be fully aware of the dangers arising from moving
vehicles and energized power rail.