Questão jurídica principal
Whether the restoration order requiring removal or setback of the border stones violated federal road traffic law because the street lies in a Tempo-30 zone.
Decisão extraída
The Tempo-30 designation did not displace the cantonal clearance requirement; no showing was made that federal speed-zone planning allowed this specific obstruction to remain.
Fundamentação extraída
Functional traffic measures under federal law may include design elements, but only where the required studies and proportionality requirements are met. No such study or authorization was shown here, so the municipal reliance on the cantonal clearance rule remained applicable.