Ключевые слова: alert, area, background, barriers, black, blurred, broken, caution, city, construction, downtown, environment, evening, focus, hazard, infrastructure, lights, line, location, logs, machinery, maintenance, noise, pedestrians, prevention, proximity, public, reflection, repair, risk, safety, signage, signs, street, surface, tape, transport, urban, view, visibility, warning, wet, yellow,