Ключевые слова: accident, ambulance, arrow sign, assistance, autobahn, barrier, behind, blue arrow, commercial land vehicle, danger, day, disasters prevention, driving, electric lamp, emergencies, emergencies and disasters, emergency services occupation, hazard sign, highway, highway assistance, large street sign, lighting equipment, misfortune, motion, noise, on time, outdoors, paramedic, photography, protection, rear view, rescue, rescue worker, risk, road, road intersection, safety, service, speed, storm, surveillance, tornado, traffic jam, transportation, triangle shape, urgency, vitality, warning street sign, warning symbol, yellow,