advice alert announcement appropriate-behavior appropriate-behaviour be-careful beware black care careful cars caution cautious communicating communication concern conditions danger dangerous directions informing Look looking lookout observant red risk risks road-conditions road-risks rural safety sign signs slippage slippery slow slow-down speed speed-reduction tractor tractors traffic vehicles warning warning-sign watch watch-out directing direction directional directive Dirt dirty old railway-sign road-sign stop traffic-flow warning-lights weathered white information potential-vehicle-damage road road-surface speed-bump speed-hump yellow communicate denied law legal no-standing not-allowed not-permitted park permission-denied prohibited prohibition refusal restricted restriction restrictions risky road-safety road-side sky unacceptable verge lanes left lefthand-lane message road-rules blue penalties clearway keep-clear no-parking no-temporary-parking access-denied parking crossing pedestrians street-sign walk walkers walking signage security share sharing