Questione giuridica chiave
Whether the boards were subject only to federal road-traffic rules or also to cantonal landscape and townscape protection rules
Decisione estratta
The boards complied with federal road-traffic law, but cantonal rules under the Reklameverordnung also applied and had to be assessed.
Motivazione estratta
Advertisements in the area of public roads are governed both by federal traffic safety rules and by cantonal provisions protecting landscape and townscape.