What is the typical condition of roads during the first 10-15 minutes of a rain storm?

During the initial 10-15 minutes of a rainstorm, roads typically become very slippery. This situation arises because the rain mixes with any oil, dirt, and debris that have accumulated on the road surface, creating a slick layer. This mixture can significantly reduce traction for vehicles, leading to an increased risk of skidding or losing control, especially for those who may be unaware of the changing conditions.

It's crucial for drivers to exercise caution during this time. The first few moments of rain can be particularly treacherous because many motorists might not anticipate the change in road conditions, leading to potential accidents. Recognizing this phenomenon emphasizes the importance of driving slowly and maintaining a safe distance from other vehicles immediately after rainfall begins.