Exterior products help protect vehicles from damage and call attention to vehicles to reduce the risk of collisions. Air deflectors block wind and rain from vehicle interiors. Bumper guides mark the edges of truck bumpers to help drivers maneuver their vehicles. Exhaust rain caps and fuel, oil, and gas caps keep water and debris out of vehicle systems. Hood protectors and mud flaps shield against scratches and dings from road debris. Nerf bars connect to vehicle frames to provide a step-up bar and a barrier against impacts. Reflective tape, reflectors, and warning whips increase vehicle visibility to help prevent accidents. Truck mirrors allow drivers to monitor their surroundings to avoid collisions. Windshield wipers keep windshields clear for navigation.