With an AutoPASS agreement, you enjoy a number of benefits, including an hourly fee and a monthly maximum price. This is how they will work from March 1, 2019.
You only pay for one toll crossing per hour in an area even if you drive through multiple toll stations in the same area. Indre Ring and Oslo ring is considered the same area and the toll stations at Bygrensen (the city limit) is considered as a separate area. This means that you pay for only two toll crossings when driving outside Oslo to Oslo city center, even if you cross several stations.
Monthly maximum price
With an AutoPASS agreement, you have a monthly maximum price. The maximum price is based on a maximum number of toll crossings in an area in each calendar month. From the 1st of March 2019 you will pay for maximum 60 toll crossings at Bygrensen, and maximum 120 toll crossings in Osloringen and Indre Ring.