I will be driving in Norway. Do I need to equip my car with an international vehicle registration code sticker, if I have an EU license plate?
International vehicle registration code:
EU license plate for the Czech Republic:
No, you don't need an international vehicle registration code since the EU plate already has this affixed on it with the European Flag.
You should however have all of the cars documentations with you, such as; insurance, registration etc. just in case should you be pulled over by the respective authorities who may want to see paper work.
Norway and the Czech Republic have both ratified the Vienna Convention on Road Traffic. As you have the country sign (CZ) integrated in your plates, you don't need an extra sticker.
CHAPTER IV. PROVISIONS APPLICABLE TO MOTOR VEHICLES AND TRAILERS IN INTERNATIONAL TRAFFIC
Every motor vehicle shall in addition to the registration number display at the back, inscribed on a plate or on the vehicle itself, the distinguishing sign of the place of registration of this vehicle. This sign shall indicate either a State or a territory which constitutes a distinct unit from the point of view of registration. In the case of a motor vehicle drawing one or more trailers this sign shall also be displayed at the back of the single trailer or of the last trailer.