Why is there fog? Is there any danger of fog? What should I pay attention to?

"Mass fog" is also fog in essence, which is influenced by the local microclimate environment. In the local range of tens to hundreds of meters in the fog, the fog is more "thick" and the visibility is lower.

Second, when will it appear?

Because it does not match the large-scale atmospheric environment, "mass fog" can often appear not only in foggy weather, but also in remote mountainous areas or rural areas with good weather conditions.

Third, the harm and prevention

Because "fog" is difficult to predict, and the area is very strong, it is difficult for vehicles to get notice or early warning in advance, which often leads to too late to slow down when entering the "fog" area, which often leads to major traffic accidents. Therefore, experts and traffic police suggest that if pedestrians and vehicles enter the "fog" area, they need to be vigilant immediately and slow down. Especially when drivers enter the "fog" area with low visibility, remember not to park on the spot. It is best to choose the nearby road exit to drive out slowly, or enter the nearby service area for temporary shelter from the rain and wait for the "fog" to disperse.