What should I pay attention to when driving in foggy weather?

When driving, I found that some riders didn't pay attention to the driving rules in foggy days. Driving school master 10 years ago. I want to know why the current masters don't teach. 1. When the visibility is less than 1 km in foggy days, the headlights and rear fog lights must be turned on. Turning on headlights is not only to look at the car in front, but more importantly, to remind the car in front. Otherwise, it is difficult to find the rear car before the front car merges in the fog, which is easy to cause rear-end collision. 2. You can't turn on the high beam in foggy night. Because the high beam is designed to illuminate a large area, it is easy to scatter in the fog, which makes the driver's eyes scattered and white, and he can't see clearly ahead. 3. If the fog continues to increase, turn on the front fog lamp. There are two kinds of front fog lights, one is yellow, which mainly uses the strong penetration of yellow light to see the front. The other is downward projection, which mainly illuminates the ground near the front of the car. It is also very useful. 4. When the visibility is less than 100 meters, turn on the double jump light while slowing down. Yellow light penetrates strongly. Second, the flashing lights stimulate the driver's eyes behind the car, which has a warning effect. If you drive on the expressway in foggy weather, don't drive too slowly, because it's easy to be chased by the rear car. If you are afraid to drive out of fear, park your car in the emergency parking area and jump twice. Then place a luminous object 50- 100 meters behind the car. In addition, passengers must get off the bus, climb over the roadside guardrail and wait outside the road. You know, many people were killed by rear-end collision because they stayed in the car after parking on the expressway.