What is the function of clearance lights and which lights are they?
2 Answers
They are used at night to help other drivers discern the width of an approaching vehicle. They serve to alert and warn other vehicles and pedestrians. Large trucks also have clearance lights on their roofs and sides. The term 'clearance light' can be understood literally: 'clearance' implies warning, and 'light' refers to the outline, so clearance lights are warning lights on vehicles that alert other vehicles. They are installed along the edges of the vehicle's roof, indicating both the height and width of the vehicle. Requirements for clearance light height: 1. Front; For automobiles, in the direction of the reference axis, the horizontal plane tangent to the upper edge of the visible surface should not be lower than the horizontal plane tangent to the upper edge of the windshield. For trailers and semi-trailers, the maximum height should be achieved as much as possible, considering the vehicle width, design and operational requirements, and the symmetry of the lights. 2. Rear; The maximum height should be achieved as much as possible, considering the vehicle width, design and operational requirements, and the symmetry of the lights.
As a driving enthusiast, I often realize the importance of width lights during long night trips. Installed on both sides of the front and rear of the vehicle, when illuminated in low-light conditions, they clearly outline the vehicle's silhouette, allowing other drivers and pedestrians to judge the car's size and position from a distance, avoiding rear-end collisions or scrapes. Especially on highways in areas without streetlights, keeping them on allows drivers behind to slow down in advance, significantly improving safety. I still remember driving in rainy and foggy weather once, where only headlights made it hard for others to see the edges, leading to dangerous proximity, but width lights provided a clear warning. I recommend making it a habit to check if the lights are functioning properly before getting out of the car, as a small oversight can lead to major risks. Ensuring they are on while driving safeguards both your safety and that of others.
