Not only is it illegal to fail to clear the frost from your windshield before driving, not doing so caused an accident this morning in which a woman in a crosswalk was hit. The Boise Police report that they were called to a collision at 7:30 a.m. today at Front Street and Broadway, where a woman in her 50s who was crossing with a green light as she walked home from work was struck by a male driver in his 50s who was making a right turn from Broadway onto Front and didn't see her - because his "vehicle's windshield was heavily obstructed by an icy frost." The woman was transported to a nearby hospital with non-life threatening injuries including facial lacerations; the man was cited for failure to yield to a pedestrian in a crosswalk, plus driving with an obstructed windshield.

Here's what the law says on clearing car windows: "No vehicle shall be operated when the windshield and/or windows of the vehicle are coated with ice, snow, sleet, or dust to the extent that the driver’s view ahead, or to the sides or rear of the vehicle are obstructed."