Tri-Arc rolling or mobile ladders are equipped with casters and can be easily moved from place-to-place in and around warehouses, processing facilities and stockrooms. Provided in an assembled form, these steel rolling ladders strictly comply with ANSI and OSHA regulations and feature a foot-operated safety lock that keeps the ladder secured at a place. The& guard and handrails of these ladders further provide additional benefits over preventing accidents or injuries at elevated heights. Selected models also facilitate folding the ladder into a flat inclined structure, thereby allowing easy storage after use.