Kernrechtsfrage
Whether the preventive withdrawal of the driver's license was lawful under Art. 30 OAC due to serious doubts about driving fitness.
Extrahierter Entscheid
Yes. The cantonal authority could reasonably find serious doubts about fitness to drive and order preventive withdrawal.
Extrahierte Begründung
Given the prior drug-related withdrawal, the conditional provisional return, irregular medical monitoring, a positive cannabis test, and the doctor's inability to confirm abstinence, the authority did not abuse its discretion.