No vehicle shall be driven or moved on any public highways situated in Clallam County unless such vehicle is so constructed or loaded as to prevent any of its load from dropping, sifting, leaking, or otherwise escaping therefrom, except that sand may be dropped for the purpose of securing traction, or water may be sprayed on roadways in the cleaning and maintaining of such roadways by public authority having such jurisdiction. Any person owning or operating a vehicle from which any objects have fallen or escaped shall immediately and in a safe manner cause the said highway to be cleaned of all such objects.