Question juridique clé
Whether the refusal to restore suspensive effect to the cantonal appeal was lawful
Solution extraite
The refusal was unlawful because the authority did not show that an overriding public interest required immediate enforcement; the measure prejudged the merits and undermined effective judicial protection.
Motifs extraits
The examination's legality had to be decided in the pending cantonal appeal. If traffic safety truly required immediate action, a preventive driving licence suspension would have been the appropriate safeguard, not denial of interim relief without sufficient justification.