Many drivers wonder why some letters of the alphabet are missing on license plates in Russia. If you look closely at the registration plates, you will notice that out of 33 letters of the Russian alphabet, only 12 are used. This is not an accident or a mistake by the designers, but strict adherence to international standards and technical requirements.
The main reason for this restriction lies in the need to unify license plates for international traffic. Russia, like many other countries, is a party to the Vienna Convention on Road Traffic, which dictates certain rules for the registration of vehicles. That is why in license plates Only those characters that have graphic analogues in the Latin alphabet are used.
Understanding the logic behind the formation of a license plate helps not only to avoid confusion when communicating with traffic police inspectors, but also to correctly perceive information on the road. In this article, we will take a closer look at why certain marks are excluded, how this relates to international agreements, and what exceptions to the rules exist.
International standards and the Vienna Convention
The basis of all rules regarding registration plates lies in international agreements. Russia has ratified the Vienna Convention on Road Traffic, which was adopted back in 1968. This document establishes uniform requirements for insignia of vehicles in international traffic. According to the convention, registration numbers must be easily readable and understandable for law enforcement officials in different countries.
The use of exclusively Latinized characters allows you to avoid errors when reading license plates by cameras that automatically record violations and by the police abroad. If the license plates used unique Cyrillic letters that have no analogues in the Latin alphabet (for example, “Kh”, “Ch” or "Sh"), this would create enormous difficulties in identifying a car outside the Russian Federation. Therefore GOST R 50577-2018 strictly regulates the use of only those signs that visually coincide with Latin ones.
When buying a car with a nice number plate, make sure that the letters you choose are actually allowed for use in the current standard to avoid problems during registration.
It is important to note that the standards are updated periodically. In recent years, changes have been made regarding the format of license plates for motorcycles, sports cars and equipment with non-standard mounting. However, the basic principle of symbol selection has remained unchanged for several decades, ensuring the stability of the transport accounting system.
⚠️ Attention: Traffic laws and documentation standards may change. Always check the current GOST requirements before ordering duplicate license plates or purchasing a car with non-standard plates.
Complete list of allowed and prohibited characters
To clearly understand which combinations are possible and which are not, you need to refer to the list of valid characters. In the Russian segment of car license plates, only 12 letters can be used. These are: A, B, E, K, M, N, O, R, S, T, U, X. All other 21 letters of the Russian alphabet are excluded from circulation on standard registration plates.
The reason for the exclusion is simple: these letters have no graphic analogues in the Latin alphabet. For example, the letters “G”, “D”, “I”, “Y”, “L”, “P”, “F”, “C”, “Ch”, “Sh”, “Shch”, "hard sign", “Y”, “b”, “E”, “Yu”, “I” - have a unique style that cannot be confused with Latin characters, but replacing them with Latin characters without losing meaning or changing the sound is impossible within the current encoding system. Although some letters (like "G" or "L") appear to be visually similar to the Latin "G" or "L", they are not used in the numbering system to avoid ambiguity in handwritten entries or in poor lighting.
- ✅ Allowed: A, B, E, K, M, N, O, R, S, T, U, X (have analogues in Latin).
- ❌ Prohibited: B, G, D, E, F, I, J, L, P, F, C, Ch, Sh, Shch, b, s, b, e, y, z (they do not have direct graphic analogues or are excluded for other reasons).
- 🚗 Application: These rules apply to all cars, trucks and buses with standard mounting.
It is worth noting that the ban applies specifically to the letter part of the number, which denotes the series. The numbers in the numbers (from 0 to 9) are used without restrictions and do not depend on alphabetical rules. The combination of numbers and letters forms a unique code that is entered into the database traffic police and is reflected in the vehicle registration certificate (VRC).
Why were these 12 letters chosen?
The choice of a specific set of 12 characters is dictated not only by the presence of analogues in the Latin alphabet, but also by historically established numbering practices. Characters should be as distinguishable from each other as possible to minimize errors during visual reading. For example, the letters "M" and "H" or "O" and "S" may look similar in some fonts, but in a standard license plate font they have clear differences.
In addition, using a limited character set simplifies the operation of automatic pattern recognition (OCR) systems. Cameras that record violations are trained on a specific set of characters. If all 33 letters were in circulation, the probability of error during recognition in bad weather conditions (snow, rain, mud) would increase many times over. Recognition algorithms work more reliably with a proven set of characters.
Historical background
During Soviet times, not all letters were used either. For example, the letter "C" was not used for a long time in some regions or series due to its visual similarity to the number "5" in handwritten text, although they were different in print. Now this ban has been lifted, and “C” is actively used.
Human readability is also an important factor. In a stressful situation, such as searching for a stolen car, a witness to a crime may only remember the approximate outline of the letters. Simple geometric shapes, characteristic of the permitted 12 characters, are remembered and reproduced by people better than complex characters like “F” or “SH”.
Features of regional codes and series
The distribution of letter series across Russian regions is a complex process that is supervised by the State Traffic Safety Inspectorate. Some combinations are considered more prestigious or, conversely, less popular among drivers. For example, series with the letters “A”, “M”, “P” are often associated with administrative or law enforcement structures, although formally they are available to all citizens.
In large cities such as Moscow and St. Petersburg, combinations of permitted letters quickly run out due to the high rate of motorization. This leads to the fact that new three-digit codes are introduced in the regions, and less popular combinations begin to be used in the letter part. However, even if there is a shortage of numbers, prohibited letters are not put into circulation, since this would require changing GOST and reconfiguring all accounting systems.
| Vehicle type | Number format | Letters used | Note |
|---|---|---|---|
| Passenger cars | 1 letter + 3 numbers + 2 letters | 12 allowed | Standard format |
| Motorcycles | 2 letters + 3 numbers | 12 allowed | New format (square) |
| Transit | 2 letters + 3 numbers + 2 letters | 12 allowed | Paper or metal |
| Diplomatic | 3 numbers + country code + 1 letter | D, T, C only | Special series |
The shortage of license plates in large cities is being solved by introducing new digital area codes, rather than expanding the alphabet.
Special series and exceptions to the rules
There are categories of vehicles for which special rules for generating license plates apply. First of all, this concerns the diplomatic corps. “Red” plates of foreign missions use special country codes and reserved letter designations, such as D (Diplomatic), T (Trade) or C (Consular). These letters are also part of the Latin alphabet and are understandable to the international community.
Military numbers are also worth mentioning. They have their own format and color scheme (black numbers on a white background or white on black), but they also use principles similar to civilian ones, although with their own peculiarities of coding units and branches of the military. In military tickets and documents for equipment, there may be letters that are absent in civilian circulation, but on the metal signs themselves, priority is given to the standard set or digital designations.
In 2026-2026, the possibility of introducing new formats for electric vehicles and other environmentally friendly transport was discussed. Some pilot projects have explored the use of additional characters or color coding, but the basic set of letters remains unchanged for now to ensure compatibility with existing infrastructure.
⚠️ Attention: An attempt to independently change a license plate (for example, stick the missing letter “B” instead of “C”) is an administrative offense and entails a fine, as well as the detention of the vehicle.
Recognition problems and human factor
Despite strict standards, problems with reading numbers still arise. Often this is not due to the absence of letters, but to contamination of the sign or deliberate distortion. Drivers sometimes use magnets or chemical compounds to hide part of the license plate. However, capture systems have learned to detect such manipulations by comparing visible symbols with probable combinations in a database.
The human factor also plays a role. Call center operators or witnesses to an accident may dictate a letter incorrectly if it is similar to another. For example, “O” and “S”, or “B” and “P” are easy to confuse in a hurry. That is why searches in databases are often carried out taking into account possible typos or visual similarity of characters.
☑️ Checking the license plate when buying a car
To minimize errors, it is important to dictate numbers correctly over the phone or with documents. The letter "A" is often referred to as "Alpha" or simply "A", but in Russian practice it is common to use city names or simply a clear pronunciation: "A" as "Anna", "K" as "Kilowatt" (although the latter is less common, just "K" is better). For letters that have no analogues in the phonetic alphabet of the Ministry of Internal Affairs, a simple name is used.
Frequently asked questions (FAQ)
Is it possible to order a number with the letter “B” or “G”?
No, it is not possible to order a standard registration plate using the letters “B”, “G”, “D” and others not on the list of 12 permitted ones. Such numbers will not comply with GOST R 50577-2018, and the traffic police will refuse to register them. The only exception is if you order souvenir products that are not intended for installation on a car.
Why is there no letter “Y” on the numbers?
The letter "Yo" does not have a graphic analogue in the Latin alphabet that would completely match its spelling. Additionally, in Russian, "Yo" is often replaced with "E" in printed text, which could create confusion. Therefore, for unification, it was excluded from the list of acceptable characters along with the other 20 letters.
What to do if the camera made a mistake in a letter?
If you received a ticket with the wrong number (for example, the camera read “O” as “C” or mixed up the region), you have every right to appeal the decision. To do this, you need to file a complaint with the traffic police or through the appropriate online services, attaching photographs of your license plate, where the correct symbols are clearly visible.
Did the rules change in 2026-2026?
The basic list of 12 letters has remained the same for many years. The changes concerned mainly the formats of license plates (the appearance of square ones for motorcycles, changing the font size for older cars), but the set of valid characters remains stable to maintain compatibility with international databases.