To apply for the ecxcemption for bus on a route, you need to have a valid AutoPASS agreement for the vehicle. If you don't already have an AutoPASS agreement, please order at My Page for AutoPASS. 

Fjellinjen can only grant free passes in our own toll stations. To get free passes though several toll stations, you have to apply for all of these stations. You do this by creating an additional agreement with related toll station company and ask for free passes on your AutoPASS tag

You can get free passes by filling in this in this form and attaching a copy of a valid license.