Photos This state-of-the-art protection system has been developed by the experts at V.M.E. over the last 20 years. Eighteen months of exhaustive testing at Wiley Laboratories resulted in OSHA approval of the Roll Over and Falling Object Protection System, due in large part to its superior structural soundness, heavy-duty, reinforced channel caging materials and the strongest welding techniques in the industry. It is standard on all Woods Boss Vegetive Clearing and Mowing System models.