Elevators that do not have a minimum of 24 in. clearance from the crosshead, or any equipment mounted on the crosshead, to the lowest member of the overhead structure in the hoistway when the car has reached its maximum upward movement shall be provided with caution signage. A sign shall be located near the top of car inspection station. An additional sign shall be posted on the hoistway wall. This sign shall be visible when accessing the car top. The sign shall consist of alternating 4 in. diagonal red and white stripes and shall clearly state "danger low clearance" in lettering not less than 4 in. in height.