Kernrechtsfrage
Whether the cantonal court violated the right to be heard by relying on a new legal reasoning about insufficient instruction of the helper.
Extrahierter Entscheid
No. The driver had to expect that the duty to use a helper under traffic rules also included proper instruction and safe integration into traffic.
Extrahierte Begründung
The same factual and legal basis had already been discussed in the criminal and administrative proceedings; the court only drew the permissible conclusion that the helper had been inadequately instructed and the driver moved off too aggressively.