Ключевые слова: abstract, blue, camera, city, concept, contemporary, control, creative, electronic, equipment, eyes, funny, icon, isolated, light, look, minimal, modern, monitor, monitoring, observation, outdoor, privacy, private, protect, protection, regulate, regulation, safe, safety, secure, security, semaphore, sign, signal, stop, stoplight, street, style, surrealism, surveillance, symbol, system, technology, traffic, traffic light, trendy, urban, warning, watching,