In order for everyone to see it, the warning sign is a regular emergency equipment on the car. The appearance is generally triangular, so it is also called a triangle warning sign. Warning signs must strictly comply with the requirements of the Road Traffic Safety Law and be made of passive reflective materials made of plastic reflective materials. The principle is that when car owners encounter a sudden traffic accident on the road, they can use the reflective properties of the warning signs to remind other vehicles to pay attention to avoid secondary accidents. When choosing a warning sign, you must choose a product with guaranteed quality, because whether subsequent vehicles detect the warning sign in time and within a safe enough distance is the key to avoiding rear-end collisions. It is recommended to choose a foldable reflective warning sign, because when the vehicle has a problem and needs to be stopped for inspection, the foldable reflective warning sign should be placed 50 meters behind the vehicle to remind the driver to slow down in advance; when not in use, it can be The foldable warning sign does not take up much space in the car.