
When driving in heavy rain, it is necessary to turn on the front fog lights. The following is a related introduction to fog lights: The function of fog lights: Fog lights are installed at the front and rear of the vehicle and are used to illuminate the road and remind the vehicles in front and behind to maintain a safe distance during rainy or foggy weather. However, fog lights should not be used when driving at night without fog, as the front fog lights lack a glare shield, and the rear fog lights have high bulb power, which can create dazzling light for oncoming drivers and those following behind, further compromising driving safety. Installation standards for front fog lights: For the installation standards of front fog lights, GB47852007 has explicit regulations, which require that the emitted light should not directly or indirectly cause discomfort to the driver through the rearview mirror or other vehicle reflections. The direction should be forward and not change with the steering angle, and the emitted light should not cause glare or discomfort to oncoming drivers and other road users.

When driving in heavy rain, I always turn on the headlights and low beams first because the raindrops make the road hazy, and visibility becomes as blurry as if covered by a cloth. The rear fog lights should also be turned on so that vehicles behind can see my position and avoid rear-end collisions. Once on the highway, it was pouring rain, and the car in front didn’t have its lights on—I almost hit it. Fortunately, I had my lights on and managed to avoid it in time. I recommend keeping a towel in the car to wipe the rearview mirror, reducing light reflection. Turning on the lights isn’t just for illumination; it’s also a warning signal that significantly enhances driving safety. Don’t solely on automatic systems—manually check to ensure the lights are functioning properly.

From a driving safety perspective, most traffic regulations require the use of headlights or low beams during rain, otherwise fines may be imposed. Rear fog lights are recommended when visibility drops below 50 meters, as they can penetrate rain and fog to reduce accident risks. When driving in heavy rain, I always check the light status to ensure both headlights and rear fog lights are on, while turning off high beams to avoid glare from reflections. Friends with automatic lighting systems shouldn't get complacent either - manually verifying that lights are functioning properly during heavy rain is the safest approach.

When driving in heavy rain, I immediately turn on the headlights (low beam) and add the rear fog lights. With reduced visibility in heavy rain, turning on the lights illuminates the road ahead and makes the car's position visible to others. My car has automatic headlights, but when the rain is too heavy, I manually turn on all the lights—a simple operation that takes just a second or two.

Car light designs vary. In heavy rain, use low beams for your own illumination, while rear fog lights are specifically designed for rainy and foggy conditions to reduce water reflection and help following vehicles identify you. Avoid using high beams as raindrops can scatter the light and cause glare. When driving in heavy rain, I turn on the headlights and rear fog lights, and also make sure to clean the windows and mirrors to maintain clear visibility.

I think it's essential to turn on the headlights when driving in heavy rain, especially the low beams to help see the road clearly, and the rear fog lights to prevent following cars from misjudging the distance. When the rain gets heavier, I turn on the lights and turn off additional interior lights, such as dimming the radio screen brightness, and activate the defogging function to maintain clear visibility. This way, driving becomes more focused and safer.


