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What to Do When Fog Occurs on the Highway?

4 Answers
Gerald
09/01/25 8:16am

When encountering fog on the highway, the following methods can help: control your speed strictly, use lights correctly, maintain clear visibility, use the horn frequently, and other reminders. Here are the details: 1. Control your speed strictly: When encountering heavy fog with extremely low visibility, it's best to drive your car to a safe area by the roadside or a parking lot, and wait until the fog dissipates or visibility improves before continuing; 2. Use lights correctly: Before driving in foggy conditions, thoroughly check all the vehicle's lighting devices, including fog lights, tail lights, width markers, and low beams. Proper use of lights can improve visibility and help you see other vehicles and pedestrians; 3. Maintain clear visibility: In heavy fog, condensation on the windshield can impair the driver's vision and make the lights from oncoming vehicles appear especially glaring. Therefore, frequently use the windshield wipers to remove condensation and improve visibility; 4. Use the horn frequently: In foggy conditions with poor visibility, frequent use of the horn can help warn pedestrians and other vehicles. When you hear another car's horn, respond immediately by honking to indicate your vehicle's position; 5. Other reminders: Avoid overtaking in foggy conditions. If you notice a vehicle ahead stopping on the right side, do not blindly go around it—consider whether the vehicle is waiting to yield to oncoming traffic.

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DiCourtney
09/14/25 3:56am

When encountering fog on the highway, my first reaction is to immediately reduce speed to a safe level while turning on both front and rear fog lights to make my vehicle visible to others. Maintain speed below half the speed limit, adjusting according to fog density. Double the following distance to avoid sudden braking and prevent rear-end collisions. Turn on the air conditioning and set it to defog mode to blow air onto the windshield, preventing internal fogging that could obstruct vision. If the fog is too thick to see road signs, I will promptly drive to the nearest rest area or emergency stopping zone and wait until the fog clears before continuing. Regular vehicle maintenance habits are crucial—I routinely check the lighting system to ensure fog lights are operational. Before foggy conditions, I check weather forecasts in advance and choose clear periods for travel. Highway fog not only impairs visibility but also increases accident risks, so maintaining calm and proper operation is key to avoiding accidents.

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MacReese
10/28/25 4:37am

When driving in heavy fog, I prioritize operating vehicle equipment to ensure safety: first, turn on the front and rear fog lights to enhance visibility, especially the rear fog light to prevent rear-end collisions. Reduce speed to a level permitted by visibility, typically below 50 km/h, and maintain a following distance of at least 3 seconds. Activate the air conditioning defogging function, set the airflow to blow directly onto the windshield, and maintain continuous dehumidification to prevent interior fogging. Avoid overtaking or lane changes; driving straight and steadily is safer. If visibility drops below 50 meters, I will seek a safe location such as a service area to pull over, turn on the hazard lights, and wait. Additionally, vehicle maintenance is crucial—for example, cleaning the lamp covers during each car wash to keep fog lights clear, and preparing emergency lights for long trips to handle unexpected situations. Fog can easily cause fatigue, so I lower the volume of the audio appropriately to stay focused on the road and adjust my physical and mental state.

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DelSawyer
12/11/25 4:53am

The first time I encountered heavy fog on the highway, I was very nervous, but now I've learned my lesson. I immediately slow down and turn on the fog lights so others can see me. I turn on the air conditioning defroster to clear the windshield, which greatly improves visibility. I maintain a safe distance from the car in front and avoid sudden braking. If the fog is too thick, I pull over to rest at a service area. The key is to practice more and gain experience—don't drive too fast in foggy conditions. Remember, safety comes first, and staying relaxed helps you handle the situation with ease.

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