Covers, as a driveway, can refer to three different materials: TARS, PAVES, and gravels. TARS are a type of asphalt that is heated and mixed with aggregate material to form a durable surface for driveways. PAVES are interlocking stones that are laid in a pattern to create a flat surface. Gravels are small stones that are spread over a surface to provide a stable base for driveways. All three materials are used to cover driveways and provide a durable surface.