Abstract: A safety device and methods for providing fall protection during the installation of roofing panels. A moveable safety handrail system includes a pair of safety rails that are supported in a generally horizontal orientation by a plurality of outrigger assemblies. The outrigger assemblies each include a support portion for support of the rail members and a rolling frame portion that engages the purlins of a rooftop structure in rolling contact. The handrail system also features a braking system that prevents inadvertent movement of the handrail device upon the rooftop understructure.