You can minimize cargo bag noise by filling the bag as much as possible, leaving little empty space within it. More often than not, however, it is not the bag that is creating noise when you drive. Rather, it is the straps used to secure it.To keep straps quiet while on the road, put a few twists into them before securing them. Be sure to also tuck away any strap ends. This will help keep them from flapping around and distracting you when you drive.