For rated speeds exceeding 100 fpm (0.51 m/s) where a solid metal stop is provided, means other than the normal terminal stopping device shall be provided to retard the car to 100 fpm (0.51 m/s) with a retardation not greater than gravity, before striking the stop. (4) A plunger-follower guide may be used provided it is arranged so that the elevator is always in a position where the unsupported le