In light rain, which portion of the lane is typically the slickest?

In light rain, which portion of the lane is typically the slickest?

• A. The left edge
• B. The right edge
• C. Near the shoulder
• D. The center of the lane

Answer: (D)

In light rain, the center of the lane tends to be the slickest because oils and residue from vehicles accumulate along the main wheel tracks there, forming a thin film on the pavement. Water sits on top of this oily layer, reducing traction more than on the edges where water drains away and the surface is less coated with oil. The edges often shed water toward the shoulder and can be slightly grippier, so the center becomes the slickest part to watch for when driving.

In light rain, the center of the lane tends to be the slickest because oils and residue from vehicles accumulate along the main wheel tracks there, forming a thin film on the pavement. Water sits on top of this oily layer, reducing traction more than on the edges where water drains away and the surface is less coated with oil. The edges often shed water toward the shoulder and can be slightly grippier, so the center becomes the slickest part to watch for when driving.