A ROAD ROLLER is a compactor-type engineering vehicle used to compact soil, gravel, concrete, or asphalt in the construction of roads and foundations. The roller is a piece of equipment primarily used in the construction of roads. It causes materials such as asphalt, gravel, and dirt to become uniformly compressed and level. Typically, a roller is comprised of a roller body and at least one metal drum. Sometimes, a road roller may have two or even three drums, depending on the project. The roller may seem like a modern piece of equipment, it has been around for centuries. ROAD ROLLER is an engineering vehicle which is used for compaction of soil, gravel, concrete, or asphalt in the construction of roads and foundations etc.