Which of the following is NOT a type of roadway surface officers may encounter?

The correct answer identifies pavement as an option that is not typically considered a distinct type of roadway surface on its own, especially in the context of types used for classifications or descriptions in vehicle operations. While "pavement" can refer to a broad category that includes surfaces like asphalt, concrete, and even cobblestone, it does not represent a specific type of surface. Other options like concrete, brick, and gravel all refer to specific materials that may comprise road surfaces: concrete is a solid, durable type; brick is often used in older streets for its aesthetic and functional properties; and gravel is commonly found in rural or unpaved road situations. Thus, pavement serves as a general term, while the other choices specify distinct materials that can be encountered on the roadways.