We have been requesting Chennai Metro for a while to have a space (on same lines as the fire assembly points outside the building) where people with reduced mobility / blind can assemble for first responder rescue, given that lifts will not be functioning.
This would be ideally near a staircase and floor marked with evacuation chair and stretcher rescue device on wall brackets and infographic instructions with QR code adjacent. Would also be connected on the tactile path - perhaps a particular audio guidance (escalator type clicking?) could guide blind people to it.
This was the reminder received yesterday - ideally this feature should enter fire code.