Notice and hazard tape applied to a lift in an attempt to hack a more efficient user journey when the lift is operating at peak capacity, e.g., when a concert in the Café in the Crypt finishes, or when users loiter too close to the door sensor.
Issue probably located in initial requirements engineering and software design compounded by (presumed) absence of user testing or modelling.
Please stand inside taped area to avoid the door sensors.
If the lift doors are held open for too long this very intelligent lift thinks it has a problem and takes itself out of service to run diagnostic checks.
We are working with the lift engineers to convince this lift that its only purpose in life is to take you between the ground floor and the crypt level!