A pebble tumbles out of a dump truck on the highway, your windshield smacks it at the maximum speed limit, and your day is ruined. Not necessarily—small chips and bull’s-eye cracks are easy to repair. First, keep dust, mud, bird droppings, and such out of the crack, because they will interfere with the repair. So pull over and put some clear plastic tape over the windshield crack until you can make your permanent fix. Then tend to the crack as soon as possible. Changes in temperature and everyday vibration caused by driving can worsen the crack. Swing by an auto parts store and pick up a clear epoxy repair kit designed specifically for windshields. Apply the adhesive according to the package directions.