what is document number in driving licence

The document number in a driving licence is the **Unique Licence Number** (DLN) assigned to the holder by the Regional Transport Office (RTO). This alphanumeric code serves as your official legal authorisation and proof of competency to drive a vehicle on Indian roads. The driving licence number is a composite key, meaning the sequence of letters and numbers is encoded to contain specific information, typically including the two-character issuing State Code, the RTO Code, and the Year of Issue. This number is essential for all official processes, including validity checks and verification.