Road surface is an important part of any roadway, and there are several different types of materials used to construct it. PAVEMENT is a common material used for road surfaces, and it is made up of layers of stone, sand, and other materials that are bound together with cement or ASPHALT. TAR is another material used for road surfaces, and it is a mixture of bitumen and aggregate that is heated and applied to the surface. MACADAM is a type of road surface that is made up of layers of crushed stone and gravel that are bound together with TAR. TARMAC is similar to MACADAM, but it is made up of layers of ASPHALT and gravel instead of TAR. ASPHALT is a type of road surface that is made up of a mixture of bitumen and aggregate that is heated and applied to the surface. All of these materials are used to create a durable and safe road surface.