It uses electronic radio transmitters and receivers operating at 5.8 GHz (MD5885) originally supplied by the Norwegian companies Q-Free and Fenrits.
[3] In 2016, the Norwegian Public Roads Administration revealed that they had chosen Norbit and Q-Free as suppliers of Autopass-transponders for the next four years.
Foreign registered vehicles without a contract are handled by the EPASS24 company, which will track the owner and bill them.
Autopass tag holders may only pay for the vehicle at fully automatic crossings with a 10% discount.
Those with a prepaid Autopass ferry account get a 50% (40% corporate) discount for vehicles and 17% for passengers at manual payment crossings.
The system involves installing a DSRC-based radio transponder on a vehicle's windscreen and signing an agreement with one of the toll collection companies in Norway.
There is an internal storage space for 100 log entries, which are normally updated each time a vehicle owner is charged when passing a toll plaza.
As of 1 January 2015, it is compulsory for all vehicles over 3.5 tonnes (3.4 long tons; 3.9 short tons) registered to an enterprise, state, county, or municipal administration or which are otherwise primarily used for business purposes to have an electronic toll payment tag when driving in Norway.
It applies to all Norwegian and foreign vehicles that meet the criteria on the entire public road network.