To increase safety, a new type of stairs were introduced. Now there are 2 gates blocking access to the stairs, both on top and bottom, to prevent use in unsafe condition (ie if the gate is open, the operator will know that he doesn't have the permission to move them yet).
Interesting proceedure, I belive I have seen those steps in CDG but they work with our proceedure on removing steps.
Is this proceedure just AF?