blank yellow road sign, large warning copy space, black frame roadside signpost signboard pole post empty traffic signage

adboard advert alert attention background black blank board careful caution city copy danger dangerous destination directing direction directional display drive empty frame galvanized guidance guide guidepost high highway indicating indication info information isolated large location metal note notice notify panel placard place plate pointer pole position post road roadside roadsign roudside route sign signage signboard signpost space street traffic transportation warning way yellow