Kernrechtsfrage
Whether the refusal to exchange the French driving licence and the indefinite ban on its use in Switzerland were lawful despite the appellant's good-faith argument.
Extrahierter Entscheid
The appellant could not rely on the principle of good faith; she had obtained the foreign licence in circumvention of Swiss competence rules, and no binding assurance or incorrect official information was shown.
Extrahierte Begründung
She had driven for years with a licence obtained in breach of Swiss rules. Any administrative inaction or police checks did not amount to a promise or erroneous assurance by a competent authority. The public interest in enforcing mandatory traffic-law rules prevailed over private reliance.