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According to the World Health Organization, about 1.25 million people die each year in road traffic accidents, which equates to 3,500 deaths a day.The warning tripod is designed to reduce the accident rate, but it must take a few minutes to place, which can be fatal on the highway.The warning sign stereoscopic projection lamp is designed for traffic safety.Combined with a car antenna, it can be mounted on the top of any vehicle to project a holographic image to warn the car behind, so that people don't have to run to the back of the car to place a tripod and buy precious time for life safety.