Question Roads are especially slippery right after it begins to rain because: Answers The water mixes with oil and grease on the road. Tires are not made to drive in wet weather. The water yet hasn't absorbed the dirt and grease. Explanation Roads are often especially slippery when it first begins to rain. Rainwater forms a slick film when mixed with oil and grease on the road surface that has not yet washed away. Take a FREE Practice Test Now This questions appears in the following tests: Delaware Knowledge Test Class A , Oklahoma Knowledge Test Class A , North Carolina Knowledge Test Class B ,