Kernrechtsfrage
Whether the federal cassation appeal could challenge the unappealed count of failure to comply with accident duties.
Extrahierter Entscheid
That count was not challenged before the last cantonal instance and therefore could not be reviewed in cassation.
Extrahierte Begründung
The federal cassation appeal is subsidiary and requires exhaustion of the cantonal remedies; issues not brought before the last cantonal court fall outside its scope.