The barricade warning light has a reflective lens, and when light shines on the lens, it reflects the light back at a certain angle, similar to a reflective tape. This allows drivers or pedestrians to see it, similar to the principle of car taillights, thereby increasing safety and reducing accidents. At the same time, the light bulb of the road barricade  light utilizes the principle of light emission from Light Emitting Diodes (LEDs), emitting yellow and red light to alert drivers or pedestrians. With these two features combined, barricade lights are widely used in construction sites, traffic barrier facilities, airports, seaports, and any other places that require safety warnings.