The Razor has proven to be extremely flexible in programming and options, the On Board Dryer System does offer Center Dryer Producer Shutdown. This option will detect pickup truck beds during the dryer pass and shutdown the center nozzle while passing over truck bed and resume when over cab of truck. The benefits of this option is to reduce the amount debris and water ejected from the truck bed.does the middle dryer blower automitically shut off when passing over bed of a pickup truck?