On a motorcycle, wearing a helmet, at highway speeds, if the visibility problem is due to water droplet buildup on the face shield, you can simply turn your head to the side, and the wind resistance will push the droplets off to the side.<p>One brief turn to each side every 30 seconds or so takes care of it.  Now, if it's torrential, the problem is likely not 'static' interference but 'dynamic' instead -- not much to do but find a place to stop.