Pretty standard if you are caught driving over the limit (which is VERY low) in Norway - you can be put in jail , you lose your licence instantly and THEN they have a trial
You're guilty - its only the final sentence they delay
Also random road blocks are not uncommon in the morning to test people on their way to work after a hard night before......
I was always told you were running a risk after about 1/4 pint or 200 ml of beer......................