New Jersey DMV Motorcycle Practice Test 2025 - Free Motorcycle Practice Questions and Study Guide

On wet roads, the center portion of the lane is likely to be the most slippery due to the accumulation of oils and debris that wash down from vehicles. When it rains, these substances rise to the surface and combine with water, creating a very slick layer, especially in the middle where the heaviest traffic tends to travel. The center of the lane receives less direct water drainage compared to the edges, making it prone to hold on to that slippery mixture longer.

While surfaces such as the shoulder of the road and near the curb can have their own hazards, they do not typically accumulate the same amount of oil and grime as the center of the lane. Intersections can be slippery as well, particularly during the beginning of rain, but they are not consistently the most slippery areas compared to the center of the lane. Thus, recognizing the center portion of the lane as the most precarious spot helps riders adjust their speed and riding style for safer navigation in wet conditions.