These ducks have been considerate enough to use the crosswalk, but chances are that the ducks in your neighborhood tend to be a little less thoughtful. A Duck Crossing sign is just one of the many signs that could increase the quality of life in your neighborhood, but you probably don't even realize that you need them No one wants to drive over a duckling on the way to work, so a tasteful sign like this can remind people to keep an eye out.