Ключевые слова: announcement, background, banner, billboard, black, business, caution, change, commercial, concept, construct, construction, danger, design, developer, display, engineer, enter, figure, floor, hard, hardhat, helmet, idea, improvement, information, isolated, job, label, marketing, message, notice, outdoor, progress, red, repair, road, safety, sign, site, street, symbol, toy, traffic, under, warning, white, work, worker, yellow,