Almost every manufacture is making units that have the Roll Over Protection System. Our Gravely has none but its an option. Everyone I see riding that has them always have them in a down position. I really dont see the point of these unless you are mowing steeper slopes. I would think they are more of a hassle, what if you forget to put it down while loading into an enclosed trailer, there's some nice damage. Or I'm sure tree branches could cause quite a few problems even in the down position. To me they are a added waste of money. As far as seat belts on a rider...no thanks. If I had to "bail out" while mowing the last thing I want to worry about is a stupid seat belt. By the time you fart around trying to remove it, its too late. Again to me these are well intended but a waste of money and probably a combined 500-600.00 added, useless accessory. JMO.