Asphalt planing is the removal and recycling of a layer of existing pavement in order to correct any deformities or issues that may have arisen due to weathering or aging. This allows for a fresh surface to be applied, providing a fresh, new look to a roadway or driveway. The layer of removed asphalt is called RAP, which stands for recycled asphalt pavement, and can be reused in other asphalt mixes.
Asphalt Planing is used whenever pavement height needs to be adjusted to facilitate better drainage or to remove pavement damage that can't be fixed through just crackfilling and sealcoating.