The world's best rear-mounted cross view "Blind Spot" safety mirror. Step van rear blind spot cross view safety mirror assembly w/ 10" convex mirror - chrome . Drivers need to see what's behind them. They must not back up blindly! With a "backing cross view" you don't have to assume anything. Back-up accidents can be greatly reduced or avoided with a cross view mirror. . The U.S. Post Office says "The rear mirror's value is simple and obvious." . Federal Express says "Immediately after installing these mirrors, the backing up accident rate plummeted 36%.".