What is the bottom light in the taillight?
2 Answers
The bottom light in the car taillight is the reverse light and fog light. Generally, the right side is the reverse light, and the left side is the fog light. Car fog lights are used to illuminate the road and provide safety warnings during rainy or foggy weather, improving visibility for the driver and other traffic participants. Fog lights are divided into front fog lights and rear fog lights. Front fog lights are usually bright yellow, while rear fog lights are red. The symbol for the rear fog light is slightly different from the front fog light—the front fog light symbol has downward light lines, while the rear fog light symbol has parallel lines. It is generally located on the dashboard inside the car. The reverse light is used to illuminate the road behind the car when reversing, serving as a warning to vehicles and pedestrians behind. Based on the materials used, reverse lights can be divided into gas car reverse lights and LED car reverse lights. Gas car reverse lights use halogen materials. Halogen reverse lights are technologically mature and low-cost. LED car reverse lights use LED materials, which are pollution-free, radiation-free, and have a long service life.
Speaking of the lowest light on the taillights, I've driven many cars and often noticed it—usually it's the reverse light or rear fog light. For example, the reverse light automatically turns on with a bright white flash when you shift into reverse gear, alerting pedestrians and vehicles behind that you're backing up. Its low position helps reduce glare reflection for other drivers. The rear fog light, on the other hand, is manually activated in rainy or foggy conditions, with a strong red beam that cuts through bad weather to enhance safety. Last time I drove on the highway in the rain, it helped improve visibility and avoid a rear-end collision—only to find the bulb socket was loose, causing poor contact. A simple twist fixed it. I recommend checking these lights during routine maintenance, especially the rear fog light, as failure in wet conditions can be particularly dangerous. Bulbs are cheap and easy to replace yourself, but if unsure, visit a professional shop. Spending a little for big safety is the smart choice.
