advice aged aging alert announcement be-careful beware black care careful caution communicating communication concern crossing danger dangerous elderly information informing lookout observant old pedestrians risk risks risky road-sign safety security seniors sign signage signs slow speed-reduction street-sign symbol traffic traffic-flow walk walkers walking warning warning-sign watch watch-out yellow cutter cutting equipment fuel grass grass-cutter groundsman lawn lawn-care lawn-mower machine machinery man mower petrol-mower power rotary-mower rotation rough rustic trimmer trimming work workman appropriate-behavior appropriate-behaviour red road share sharing stop animal appropriate behavior appropriate behaviour blue control directions dog dogs lead leash restrain restrained restricted restriction rules white cars cautious conditions Look looking road-conditions road-risks rural slippage slippery slow-down speed tractor tractors vehicles animals awareness be careful birds bright chickens chicks crossing- alert ducklings ducks protection road crossing watchout water birds water fowl wildlife behavior behaviour communicate local public-area reptiles restrictions seen sighting sightings snakes venomous pet pets double-lines island reflective refuge small-traffic-island traffic-island large-vehicles look-out road-train rural-area semi-trailers text trailers transport transportation trucking trucks words afternoon airport airport tarmac caged cages carers caring cats light loading luggage luggage trolley mobile movement prepared preparing ready shadows sunshine tarmac together travel trolley trolley train vehicle waiting