What Are Vehicle Position Lamps?
2 Answers
Vehicle position lamps, also known as width indicator lamps, are lights installed at the highest points of the front and rear of a car, somewhat similar to the anti-collision lights mounted on the wingtips of aircraft. These lamps are primarily used during driving in conditions such as dusk, overcast days, rain, or fog to indicate the width and height of the vehicle. This helps other drivers judge the relative position and size of the vehicle during encounters or overtaking. Typically, the color of the position lamps is white at the front and red at the rear. The rear position lamps usually emit a red light to enhance the penetration of the light source, making it easier for following vehicles to spot the car ahead in poor visibility conditions, thereby preventing accidents caused by delayed detection of the vehicle in front due to unclear visibility.
I've been in long-distance transportation for many years. I remember one time when the fog was particularly heavy, just as dawn was breaking, my truck was parked by the roadside waiting for someone. Because the clearance lights were on, the big truck behind almost scraped against mine but managed to brake in time—these are the small lights installed at the front and rear positions on both sides of the vehicle. Turn them on during dusk or bad weather, and other drivers can clearly see the outline of your vehicle, avoiding misjudging the distance. When driving on highways or small roads, I immediately turn on the clearance lights as it gets dark. Unlike headlights and taillights, they're not as bright but focus more on indicating the vehicle's width. Making it a habit can significantly reduce the risk of accidents.
