What to Do When Encountering Heavy Fog on the Highway

[AbigailFitz]

When encountering heavy fog on the highway, you should: 1. Drive at a reduced speed and maintain a safe distance from the vehicle ahead in the same lane; 2. Use lights appropriately to enhance visibility for yourself and others; 3. Apply brakes gently and frequently to control speed and alert following vehicles to maintain distance; 4. Avoid sudden braking or sharp steering to prevent affecting vehicles in other lanes; 5. In case of an accident, take safety measures, protect the scene, and report the incident. Occupants should exit the vehicle and road promptly, standing outside the guardrail to await rescue; 6. Upon hearing emergency horns or collision sounds from vehicles ahead, slow down promptly and find a safe place to stop.

[OJude]

I am extremely cautious when encountering heavy fog on the highway. I immediately turn on the fog lights and hazard lights, reduce the speed to below 40 km/h, and maintain a distance of at least four solid white lines from the vehicle in front. Never brake suddenly or change lanes randomly. When visibility drops below 50 meters, it's safest to pull over at the nearest service area. If the exit is very close, it's better to just get off the highway. Once, I saw three cars parked in the emergency lane during thick fog—it was extremely dangerous as the following cars couldn't react in time. Nowadays, car navigation systems warn about fog-prone sections in advance, and slowing down two kilometers ahead is the safest approach.

[AlexLynn]

Using the right lights is crucial when driving on highways in foggy conditions. I've noticed many people only know to turn on the hazard lights, but in fact, yellow fog lights have five times the penetration power of regular headlights. With fog lights on, reflective signs can be seen clearly from 20 meters away. The windshield wipers should be kept running continuously, and the rear window defroster should also be turned on. The key point is to always turn off the high beams, as the white glare makes it even harder to see. The most terrifying situation is when the car in front suddenly brakes hard. I make it a habit to keep my foot hovering over the brake pedal, ready to tap it at any moment. Once in heavy fog, I encountered an accident and only saw the warning sign from 50 meters away. When I quickly changed lanes, my tires even skidded.

[LaJade]

Last month on the Jingha Expressway, I witnessed a seven-car pileup in thick fog. Three key points: maintain an extra-large following distance – at least 100 meters for 100-meter visibility; stick to the middle lane; keep both hands firmly on the wheel. The scariest moment is when nearby trucks spray water mist, instantly whitening your vision. Keep real-time traffic updates on your navigation app – when you see red congestion ahead, prepare to brake immediately. In foggy conditions, it's better to take a detour than cross river bridges – the moisture over water surfaces causes bridge decks to frost three times faster than land. Remember to bring some chocolate to stay alert.

[DelThomas]

When traveling with family in heavy fog, extra caution is needed. First, ensure children fasten their seatbelts and close windows to prevent fog from entering. Using the air conditioning in external circulation mode effectively prevents windshield fogging, which works better than applying anti-fog agents. I usually have the front passenger assist with navigation warnings while keeping a weather radar map open on a phone in the backseat. In dense fog, even service area signs become hard to read—refuel immediately when spotting a gas station, as fuel gauges drop rapidly during traffic jams. Keep reflective vests handy near the driver's seat, and make sure everyone wears them before exiting the vehicle if necessary.

[LeLukas]

My Tesla alerts me about following distance in foggy weather. In practice, autonomous driving becomes dangerous when encountering thick fog patches, requiring immediate manual takeover. For gasoline cars, remember to check the antifreeze—sudden temperature drops in heavy fog can easily cause malfunctions. Carrying a high-power flashlight is very useful; last year when helping a stranded vehicle place warning triangles, a regular flashlight was completely useless in the fog. Most importantly, maintain composure—don't accelerate even if someone keeps honking. After safely exiting the highway, remember to check your brake pads—wear increases by 30% on slippery roads.