Generally, the rural areas of Norway are among the safest places in the world. Except from an occasional pub fight, police are not often exposed to major crime. Expect the police and local autohorities to be very helpful to tourists as long as you don't drink and drive.
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As for every major region in Norway, some of the dialect words may pose a barrier for tourists not used to other dialects than the one spoken in Oslo. Several words have completely other meanings here than in other parts of Norway, and there are other words which you cannot find anywhere else. There is also a dictionary available if you already know some Norwegian. Some years ago, the Valdres dialect scored as "the nicest dialect in Norway" in a national radio programme.
Examples of local wordsSquirrel - Norwegian: ekorn, Valdres: ikødnAll right as in an all right person - Norwegian: grei, Valdres: snodig which in Norwegian normally means strange/funnyLonely - Norwegian: ensomt, Valdres: aule