Kernrechtsfrage
Whether the intoxicated companion on a learner drive falls within the offence of driving a motor vehicle while intoxicated under Art. 91 SVG, consistently with the legality principle.
Extrahierter Entscheid
Yes. On a learner drive, the companion is legally involved in the driving process and counts as a vehicle driver for Art. 91 SVG.
Extrahierte Begründung
The court held that the companion must supervise, instruct, and if necessary intervene physically; he therefore jointly drives the vehicle with the learner driver. This interpretation follows the statutory scheme, legislative history, and prior case law and does not impermissibly extend criminal liability by analogy.