You will notice streaking as well as bouncing signs when the windshield wiper blades are not working properly. Note that wiper streaking could cause unsightly stripes to appear on the windshield. If you don’t get the blades replaced soon, there is a good chance these stripes will become a permanent stain on the front window. Mostly, noticing the malfunctioning wipers isn’t rocket science. If you notice the blade losing their accuracy and smoothness, then that’s probably a sign you need to invest in a new pair of winter wiper blades for your vehicle.