alert announcement be-careful beware black blocked blocked-path care careful caution communicating communication danger detour directing direction go-around informing lookout observant observe pedestrians safety security sign warning watch watch-out yellow 'Arthur' at Goonilly Down Communications dish Cornwall. land-station Lizard Point advice approved assistance blue boat-ramp boating boats conditions directional helpful indication indicator information informative ramp risk risky river signs symbol symbols water waterside white words animal appropriate behavior appropriate behaviour concern control directions dog dogs lead leash pet pets restrain restrained restricted restriction rules advising appropriate-behavior appropriate-behaviour back communicate dead-end lettering message path pathway red turn turn-around turn-back u-turn wording access accessibility allocated allocation allowed availability bus buses designated designation location parking parking-area parking-lot parking-sign permission permitted vehicles airport announce broadcast camera chat computer contact cutout discuss electronic happy heathrow internet isolated laptop London man media modern net not shaven portable screen shaven speak video virtual web wireless www black and white children denial denied dogs-prohibited kids not-allowed not-permitted permission-denied playground prohibited prohibition arrows divergent diverging law no-alternative only pointer pointing specific splitting splitting-up street-sign traffic traffic-flow traffic-sign turning two-way 3-D appearance appreciate appreciating appreciations color coloration colored colour coloured expressing expression eye-catching golden golden-thanks liquidy notification notifying plastic raised thanking thanks