When seeing the drunk person in this situation will you refrain from overtaking the vehicle?

The behaviour of an intoxicated person, visible on the left side of the carriageway, is unpredictable and may create an immediate hazard on the road. In accordance with the principle of limited trust, you should assume that the pedestrian may suddenly enter the carriageway. Commencing an overtaking manoeuvre under these circumstances would be extremely dangerous, therefore you should refrain from it.