Key legal question
Whether the conditions for an indefinite security withdrawal of the driving licence under Art. 16d SVG were sufficiently established.
Extracted holding
The existing file did not justify a final confirmation of a security withdrawal; additional traffic-medical investigations were necessary before deciding.
Extracted reasoning
Hair-analysis EtG values indicating heavy drinking were only an indication and could not alone replace a thorough medical assessment. The cantonal authorities had not sufficiently clarified personal circumstances, the concrete incident, drinking pattern, and medical signs.