Abstract: To securely avoid any gap formation between a ring mount barrier and adjoining parts of the floor of an articulated vehicle such as a bus, a safety cover construction is carried by a turntable coupling for supporting the ring mount barrier. The safety cover construction has a U-shaped transverse cross-section defining a receiving space for receiving a lower end of the ring mount barrier with upper free ends of legs of the U-shaped cross-section in engagement therewith. The safety cover construction is formed of an elastic material, such as rubber or synthetic plastic, and thus is able to remain in engagement with the ring mount barrier despite changes in pitch and bending angles between portions of the vehicle articulated by the turntable coupling. To further assist in retaining the upper ends of the legs in engagement with the ring mount barrier, according to a preferred embodiment, a spring steel reinforcement may be embedded within the legs.