Traditional Culture Encyclopedia - Weather forecast - What is fog?

What is fog?

What is "defogging"?

"Tuotuo fog" is a common name for "mass fog", and it is also fog in essence. Affected by 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.

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.

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.

What should I do if I encounter "fog"

Fog weather is prone to occur in winter, and "mass fog" generally appears in the morning and morning when there is a large temperature difference between day and night and there is no wind, and sometimes it occurs in the evening. When "fog" is observed in front of the line of sight, deceleration measures should be taken immediately to ensure the smooth parking of the vehicle. Before entering the "fog", if the distance and speed can meet the lane change conditions, turn on the signal light and slow down into the rightmost lane on the premise of ensuring safety. The purpose of doing this is to quickly enter the emergency lane to avoid collision when there is an accident or traffic jam ahead. After entering the "fog", it is necessary to strengthen observation, slow down to a suitable speed and pass smoothly, and do not brake urgently if there is no situation. In case of traffic jam ahead, unless you can enter the emergency lane of the rightmost lane to avoid it, don't try to change lanes after normal driving or parking in the overtaking lane, and don't let the people on board get off, so as to avoid the rear car suddenly catching up and causing more harm.