Why It is difficult to drive on a misty or foggy day?

Driving on a misty or foggy day is challenging due to reduced visibility, which makes it hard to see other vehicles, road signs, and potential hazards. The moisture in the air can also affect vehicle performance, such as braking distance, making it difficult to react in time. Additionally, fog can distort depth perception, leading drivers to misjudge distances. These factors increase the risk of accidents and necessitate extra caution and reduced speed.