Are roads most slippery at the beginning of a rainstorm?

Roads are indeed most slippery at the beginning of a rainstorm. This is primarily due to the fact that rainwater mixes with oil and other debris that have accumulated on the road surface over time. During dry periods, oils from vehicles and other residues settle on the road, creating a slick surface that is particularly hazardous when the first raindrops fall. The initial rain combines with these substances, forming a slippery layer that can significantly reduce traction for motorcycles and other vehicles.

As the rain continues, the water washes away some of the accumulated oils and debris, generally improving traction over time. Consequently, the period immediately following the start of rain poses a greater risk for motorcyclists, as it can lead to skidding and loss of control. Understanding this behavior of road surfaces is crucial for motorcycle safety and handling, particularly in inclement weather conditions.