Most European countries allow the use of Wi-Fi in the 2.4, 5, 6 and 60 GHz bands but some administrations are delayed in implementing the latest EU rules that harmonised the technical conditions for using Wi-Fi in road vehicles, trains and aircraft.

Amongst the 21 European countries observed by Cullen International's European Radio Spectrum service:
 

• All countries allow Wi-Fi in the 2.4 GHz and 5 GHz bands.
• 15 countries have already implemented the EU harmonised technical conditions for using the 5150–5250 MHz band in road vehicles, trains and aircraft.
• Eight countries (including Switzerland, which is not bound by EU rules) have also implemented the latest EU amendment that allowed Wi-Fi in road vehicles in 5470–5725 MHz. EU member states should have implemented this amendment by 30 June 2023.
• All but three countries opened the lower 6 GHz band (5945–6425 MHz) for Wi-Fi. EU member states should have opened the band by 1 December 2021.
• In the 60 GHz band, all countries allow at least indoor use in 57–66 GHz. All but two countries extended this range to 57–71 GHz and allow also outdoor use, as foreseen by the rules harmonised at EU level in 2019.

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