The Rolling Dynamic Deflectometer (RDD) is a nondestructive testing device that is used to measure continuous deflection profiles along highway and airport pavements in project-level studies. The RDD has an electro-hydraulic loading system that generates a sinusoidal force on the pavement through two loading rollers. An array of rolling sensors continuously measures the sinusoidal deflections at multiple locations as the RDD moves at about 1.6 km/hr. Continuous deflection profiles contain vast amounts of information about the condition of the pavement. This information provides a detailed picture of existing conditions and allows pavement engineers to select appropriate rehabilitation schemes. Example RDD profiles are shown for rigid, flexible, and overlaid pavements. At one flexible pavement site, the RDD deflection values are compared with deflection values measured by both the Falling Weight and Rolling Wheel Deflectometers.