Ключевые слова: accident, activity, alarm, alert, area, attention, authorized, background, banner, beware, caution, construction, crime, danger, dangerous, data, emergency, environment, error, factory, harmful, hazard, health, healthcare, industry, information, injury, management, notice, occupational, police, procedure, process, protect, protection, restricted, risk, safe, safety, secure, security, signal, sky, stop, traffic, transportation, warning, word, work, zone,