(1) You must ensure that portable and powered dockboards are strong enough to carry the load imposed on them.

(2) You must ensure that portable dockboards are secured in position, either by being anchored or equipped with devices which will prevent their slipping.

(3) You must ensure that powered dockboards are designed and constructed in accordance with Commercial Standard CS202-56 (1961) "Industrial Lifts and Hinged Loading Ramps" published by the U.S. Department of Commerce.

(4) You must ensure that handholds, or other effective means, are provided on portable dockboards to permit safe handling.

(5) You must ensure that positive protection is provided to prevent railroad cars from being moved while dockboards or bridge plates are in position.