advice alert appropriate-behavior appropriate-behaviour be-careful beware care careful caution cliff cliffside colors colours communicate communication concern danger dangerous deterioration fading-sign fall falling information informing light lookout observant restricted restriction restrictions risk risks risky river riverside safety shadows shapes shrubs sign signs sunlight textures trees warning warning-sign watch watch-out water background black bright colored colorful coloring coloured colourful colouring communicating contrast contrasting contrasts decoration emergency facetious fading flippant fuzzy informative message paint painted pink pink-painted-wall sarcasm symbolic vehicles wall wallpaper wording words yellow advising automobiles cars closed dead-end end lettering letters limited limited-access motor-vehicles no-thoroughfare no-through-road road roadway white