Questione giuridica chiave
Whether the cantonal court violated municipal autonomy by applying § 238 PBG to the billboard permit.
Decisione estratta
The cantonal court did not violate municipal autonomy; its interpretation was not arbitrary and the municipality had unduly narrowed its discretion.
Motivazione estratta
A municipality may invoke autonomy only against arbitrary application of the relevant law or excess of review powers. The town's billboard concept was not binding guideline law under § 238 PBG, and a permit must be assessed on the concrete location. By rigidly limiting approval to predefined sites, the municipality failed to exercise its discretionary assessment.