Model MPS (Mobile Protection System) 350 safeguards road crews from errant vehicles of any size, plus protects drivers of shadow vehicles. Ideal for moving or stationary work zones. Withstands minor hits from vehicles, without delivering impaired capacity. Also enables fast repair or replacement, based on impact severity. Meets FHWA safety criteria. One-piece steel frame resists moisture, deterioration, and sagging. Features open, exposed design that eases routine inspection. Adjustable support chains assure precise leveling on surface. Power hoist lifts steel frame cushion for traveling.