advice alert announcement be-careful beware car care careful cars communicating communication danger dangerous directions directive drivers informing lookout observe red reverse risk risks safety sign turn-back vehicles warning warning-sign watch watch-out white awareness blue camera camera-surveillance cctv closed-circuit-tv community external information light lighting monitoring observation public security security-camera surveillance surveillance-camera under-observation video-camera watched caution cautionary cautionary-entrance-tape cautionary-tape Dirt discarded fallen ground observant pedestrians plastic tape yellow advising animal canine canine-guard communicate dog guard-dog lettering letters mammal message no-entry risky warned wording words appropriate-behavior appropriate-behaviour black cycling cyclists share sharing signs walk walkers walking attentive autumn Bengal Cat Camouflage fall hiding leafs looking lying on the watch concern directional lanes left lefthand-lane Look road road-rules traffic traffic-flow