Motorized overlanders or RV's have stricter guidelines as those vehicles fall also under the offroad vehicle laws. The law states "there is no right of public access for motorized vehicles" If you for example drive onto a grassy meadow and camp, you can be penalized if reported to the police. Even driving private roads is not permitted, but if its not marked with a private road sign then you can pass.
It is strict in the Nordic's and confusing sometimes but as it has been mentioned before if your unseen and leave no signs of your stay, then you'll be fine.
An example that I can give from last summer was the 7 nights that we spent on Gotland. At one beach a man walking his dog came up to us and tried to run us off "his" beach even though we were parked in an accepted parking area. Once I clearly showed him on the gps and local terrain maps where we were and rights that we had he changed his tune. BUT afterwards we felt un welcomed and uncomfortable therefore left. A half hour later we found an empty beach that we had to ourselves.
Quite and peaceful, an excellent nights camp.
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