(1) Any landing enclosure shall have a railing at least 42 in. high to protect all landing platforms and those areas of a building used as landing platforms.

(2) Where gates are not provided at the entrance to the platform, a chain with a sign shall be provided to block the landing entrance. The sign shall state "Keep off landing until elevator has stopped at platform."

(3) If gates are provided they shall be:

(a) Either a horizontally sliding type or a swing type; and

(b) Equipped with a latch that holds the gate closed and an electrical contact to prevent movement of the elevator when a gate is open.