Seeing the colored traffic lights at an intersection as festival or holiday decorations rather than a warning of impending danger is system of hallucinogens.
What is hallucinogen?
Hallucinogens are diverse group of drugs that can alter a person's awareness about their surroundings and control their emotions.
Examples of such drugs are oxycodone, vicodin, cocaine, LSD (lysergic acid diethylamide) etc.
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