Vehicles registered in Slovakia were generally assigned to one of the districts (okres) and from 1997 until 2022, the license plate coding (Slovak: EČV, evidenčné číslo vozidla) generally consisted of seven characters and takes the form XX-NNNLL, where XX was a two letter code corresponding to the district, NNN was a three digit number and LL were two additional letters (assigned alphabetically).
From January 2023, a new state-wide numbering scheme was introduced, preserving the same layout, but replacing the initial two-letter district code with arbitrary letters of the alphabet (assigned alphabetically, starting with AA). Other changes include new font and a smaller coat of arms.
There are three design varieties that are in valid use.
Where limited space warrants it, two-line plates can be used on a vehicle. A block of combinations is set aside from the regular plate range as required.
There are 79 districts in Slovakia. In 69 cases, the district is named after and the code derived from its principal city which is included in the district. Two cities, Bratislava (the capital) and Košice (KE), consist of 5 and 4 districts respectively. This fact is not reflected on the plates, only one code is used. Additionally, Košice-okolie (KS) comprises an area around Košice (the city itself excluded) while having its seat in the city proper. Each district is assigned at least one code. Ten cities including eight seats of the region (kraj) are assigned more. Since 18 August 2010, Bratislava has been registering plates with its second code, BL.[2] The Ministry of Interior of the Slovak Republic held a Facebook poll as the reaction to public dissatisfaction of Bratislava inhabitants with the previously intended BD code. As the combinations of the BL code are to be exhausted soon, another Facebook poll was organised in November 2018. Participants were asked to vote for the next code in three rounds (two semi-finals and one final). As much as 89% opted for the BT code over the BE.[3] Bratislava is the only okres to do so and will remain in this position as since 2023 district codes were abolished.
The older Czechoslovak system (Slovak: ŠPZ, štátna poznávacia značka) XX NN-NN or XXY NN-NN was in place until 30 March 1997. All such registrations expired on 1 January 2005; vehicles that had not been re-registered under the new system are not allowed on public roads.
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