I can't stand getting behind ANY truck that has one of those "protective" tarps across the top of their haul. You don't know how many times my windshield has been dinged and pitted because of small rocks and stones being tossed out of the compartment and also from the wheel treads. Many times it's like a shower of stones. If one ever hits my windshield and cracks it, I immediately get the license plate # and the name of the company and call them to report it. I also mark down the date and time it happened. I'm not reporting it to my insurance company only to have my rates go up cuz of their ignorance.