Questão jurídica principal
Whether Art. 108 SSV applies to converting a Tempo-30 zone into an encounter zone.
Decisão extraída
Yes. Any further reduction of the speed limit, including from 30 to 20 km/h, must satisfy Art. 108 SSV and be supported by the required assessment.
Fundamentação extraída
A stepwise lowering of speed limits would otherwise evade the statutory requirements. Every further reduction is itself a deviation from the general speed limit and therefore must meet Art. 108 SSV.