Mandatory tag for all heavy commercial vehicles
All Norwegian and foreign vehicles with a total permitted weight exceeding 3.5 tons registered to a business, or which in other ways is used for business, must be equipped with a valid toll tag linked to a valid agreement for the payment of tolls in Norway.
The tag must be linked vehicle's registration number by agreement, and installed in the vehicle when driving in Norway.
Violations of this order are punishable a fine of NOK 8000. The inspections and fines are governed by The Norwegian Public Roads Administration.
Read more here: https://www.autopass.no/en/user/compulsory-tag/