Blank driving licence number - where to find and what is it used for?
The blank number is one of the most important elements of the driving licence, although often overlooked by drivers. Unlike the driving licence number, which is the main identifier of the document, the blank number has technical and security functions. In this article, we will explain what the blank number is, where to find it and why it is so important for the security of the document.
What is a blank driving licence number?
Numer blankietu prawa jazdy to unikalny identyfikator druku, z którego zostało sporządzone prawo jazdy. Każdy blankiet prawa jazdy ma swój niepowtarzalny numer, który pozwala na kontrolę i weryfikację autentyczności dokumentu. To swojego rodzaju „numer seryjny” formularza, który gwarantuje, że dokument został wydrukowany na oryginalnym, zabezpieczonym blankiecie.

A blanquette is a standard form with specific security parameters that is used by the offices to draw up driving licences. Each such form is numbered and registered in the system, which allows control over the issuing process and the prevention of forgery.
Where can you find the blank number on your driving licence?
The blank driving licence number is located on the back of the document (reverse side). Unlike the driving licence number, which is on the front of the document, the blank number is usually printed in smaller type and may be combined with other security features.
The blank number can be found on the Polish driving licence:
- On the back of the document (second page)
- Often near the barcode
- Może być oznaczony jako „Nr blankietu” lub podobnym opisem
- It consists of a combination of letters and numbers
Difference between driving licence number and blank number
It is important not to confuse the driving licence number with the blank number, as these are two completely different identifiers:
Driving licence number:
- Located on the front of the document
- This is the main identifier of the driver in the system
- Consists of 10 digits
- Used for most administrative formalities
- Needed for car rental, insurance, etc.
Blank number:
- To be found on the back of the document
- Identifies a specific form
- Serves security and control purposes
- Less frequently used in daily formalities
- Important to verify the authenticity of the document
What is the blank number used for?
The blank driving licence number has several important functions:
1. Protection against counterfeiting
Each blank has a unique number, making it difficult to forge documents. Offices can check that a given blank number has actually been issued and that it has not been used to produce another document.
2. control of the dispensing process
The blank numbering system allows control over the process of issuing driving licences. Each blank used is recorded, ensuring the transparency of the process.
3. tracing the history of a document
In the event of problems with a document, the blank number allows the history of its issue and any changes to be reconstructed.
4 Verification of authenticity
During police checks or other verifications, the blank number can be used to confirm that the document was legally issued by an authorised authority.
When might a blank number be needed?
Although the blank number is not used as often as the driving licence number, it may be needed in the following situations:
- Police checks – w przypadku podejrzeń o fałszerstwo dokumentu
- Litigation – jako dowód autentyczności prawa jazdy
- Reporting loss or theft – do identyfikacji konkretnego egzemplarza
- Administrative proceedings – w szczególnych przypadkach wymagających pełnej weryfikacji
- Customs or border controls – przy podejrzeniu o nielegalność dokumentu
Security and protection of the blank number
Like the driving licence number, the blank number should be protected from unauthorised persons. Although it is not used that often, it can be used by third parties for illegal activities. Therefore:
- Do not share photos of the back of your driving licence with unauthorised persons
- When copying a document, cover the blank number if it is not required
- Report a lost or stolen document, including the blank number
Summary
Numer blankietu prawa jazdy to ważny element bezpieczeństwa dokumentu, który choć rzadziej używany niż numer prawa jazdy, pełni kluczową rolę w zabezpieczaniu przed fałszerstwami i kontroli procesu wydawania dokumentów. Znajdziesz go na tylnej stronie prawa jazdy, gdzie służy jako unikalny identyfikator formularza. Pamiętaj, że to inny numer niż numer prawa jazdy – pierwszy służy celom technicznym i bezpieczeństwa, drugi to główny identyfikator kierowcy w systemie.