advice alert announcement be-careful beware black care careful cars caution cautious communicating communication conditions danger dangerous information informing large-vehicles look-out observant red risk risks road-conditions road-train rural-area safety semi-trailers sign signage slow-down speed speed-reduction symbol text traffic trailers transport transportation trucking trucks vehicles warning warning-sign watch watch-out white words chop wood cold drawbar trailer green hibernation lumber rural snow snowfall snowy timber tree trees tumbril winter wood ahead block blockage blocked construction constructions cutout detour diversion isolated lamps lights platform road roadsign roadsigns signs trailer turn works auto camper camping car door drive driver driving house housing machine opened sleep tent truck vehicle windscreen agricultural agriculture autumn barley clouds combine crop cut dramatic farm farming feed field food grain growing harvest harvester mow sky tractor