Die Frage, ob Radarwarner legal sind, kann in Europa nicht einheitlich beantwortet werden. Es gibt Länder, in denen die Verwendung von Radarwarnern legal ist, während in anderen EU-Ländern nur die Verwendung von Störsendern verboten ist. In anderen Ländern sind nur Radarwarner zulässig, die Kameras mit fester Geschwindigkeit über GPS melden, nicht jedoch Radarempfänger.
Deutschland: Radarwarner erlaubt – Nutzung jedoch nicht.
In Deutschland zum Beispiel sind Radarwarner grundsätzlich nicht verboten, jedoch deren Nutzung während der Fahrt regelt dies der Bußgeldkatalog in Verbindung mit der StVO §23 (1c) als eine Ordnungswidrigkeit:
Wer ein Fahrzeug führt, darf ein technisches Gerät nicht betreiben oder betriebsbereit mitführen, das dafür bestimmt ist, Verkehrsüberwachungsmaßnahmen anzuzeigen oder zu stören. Das gilt insbesondere für Geräte zur Störung oder Anzeige von Geschwindigkeitsmessungen (Radarwarn- oder Laserstörgeräte). Bei anderen technischen Geräten, die neben anderen Nutzungszwecken auch zur Anzeige oder Störung von Verkehrsüberwachungsmaßnahmen verwendet werden können, dürfen die entsprechenden Gerätefunktionen nicht verwendet werden.
| Land | POI radar detector allowed | Radar Detector Ownership allowed | Radar Detector Use allowed | Jamming Use allowed | Notes |
| Austria | ✓ | ✓ | ✓ | X | GPS devices with a POI warner as an "announcement function" are permitted. Radar warning devices that can be used to influence or interfere with technical traffic monitoring equipment are prohibited. These may neither be attached to nor carried on motor vehicles. Violators face an administrative fine of up to 5,000 euros and the device will be confiscated. |
| Belgium | ✓ | X | Fines or imprisonment from 15 days to three months. Doubling of the penalty in case of a repeat offence. The device is confiscated and destroyed. POI function is allowed. | ||
| Bulgaria | X | Fine | |||
| Czech Republic | ✓ | ✓ | ✓ | X | Only devices that make measurement impossible or interfere with it (interferers) are prohibited. Fine from 5,000 to 10,000 kroner (approx. 200-400 euros) |
| Denmark | X | Fine | |||
| Finland | X | X | The fine for a speeding offence is 100-115 Euros for a speeding offence of up to 20 km/h. For a minor traffic offence, the maximum fine is 50 euros. For serious speeding offences and for other traffic violations, the fine is determined according to the income of the driver Income. | ||
| France | ✓ | X | X | X | Fine. The device will be confiscated. If necessary, confiscation of the vehicle in the case of permanently installed devices. The POI function is permitted if it generally indicates danger spots at a sufficient distance. However, the clear and direct indication of radar measuring points is prohibited. |
| Germany | ✓ | X | 75€ fine; 1 point; according to § 23 para. (1c) StVO any technical device designed to interfere with or indicate these measures. | ||
| Greece | X | X | Fine. 30 days driving ban | ||
| Hungary | X | X | Fine. The device will be confiscated. | ||
| Italy | X | X | Fine. Devices will be confiscated. | ||
| Latvia | X | Fine | |||
| Lithuania | ✓ | ✓ | ✓ | X | Fine. Only devices that actively interfere with the measurement are prohibited. The device will be confiscated. |
| Luxembourg | ✓ | X | Fine up to 5,000 euros or imprisonment from eight days to one year. The device is confiscated. POI function is allowed. | ||
| Netherlands | ✓ | X | X | Fine of 430 euros. The device will be confiscated. Navigation devices with POI function and speed camera apps are permitted. | |
| Norway | X | Fine up to 10,000 kroner (approx. 1,000 euros). Equipment will be confiscated. | |||
| Poland | ✓ | X | X | Fine. Equipment that is clearly not ready for use (e.g. packed) may be carried. | |
| Romania | ✓ | ✓ | ✓ | ✓ | Radar detectors are gererally Allowed. Legal regulation is currently being discussed. |
| Serbia | ✓ | ✓ | X | X | Fine between 50 euros and 170 euros if used. In the event of an accident, up to 45 days imprisonment instead of a fine is possible. Navigation systems with POI function are allowed. |
| Slovakia | X | X | Fine | ||
| Slovenia | ✓ | ✓ | ✓ | X | Only devices that actively interfere with the measurement are prohibited. Fine |
| Spain | ✓ | X | X | Fine. POI function is allowed. | |
| Sweden | X | X | Fine. The device will be confiscated. | ||
| Switzerland | X | X | Fine or imprisonment. The device will be confiscated. Also GPS navigation devices that can warn of speed checks as part of their additional functions (POI function). | ||
| Turkey | X | X | Fine |
