Fares for vehicles with a trailer is based on the actual length of the motorised vehicle. Actual length of a vehicle includes any protruding elements, such as a bike rack.

If the vehicle (actual length) is more than 6m, payment is based on length-rates, based on the combined length of vehicle+trailer.

However, where the vehicle (actual length) in itself is less than 6m and less than 3501 kg, other rates will be applied:

• When vehicle+trailer is less than 6m, standard single-rate (B2) is used
• When vehicle+trailer is more than 6m, double rate (2x B2) is used
• When vehicle+trailer is more than 10m, triple rate (3x B2) is used

These categories are defined by Riksregulativet for Ferjetakster, ref. Statens Vegvesen (the Norwegian Public Roads Administration)