The National Driver Register (NDR) and Problem Driver Pointer System (PDPS)
The National Driver Register (NDR) is a division in the National Center for Statistics and Analysis under the National Highway Traffic Safety Administration (NHTSA).
The NDR maintains the computerized database known as the Problem Driver Pointer System (PDPS) which contains information on individuals whose privilege to operate a motor vehicle has been revoked, suspended, canceled or denied or who have been convicted of serious traffic-related offenses. The records maintained at the NDR consist of identification information including name, date of birth, gender, driver license number, and reporting State. Based on information received as a result of an NDR search, PDPS will "point" the State of Inquiry (SOI) to the State of Record (SOR), where an individual's driver status and history information is maintained.