Questão jurídica principal
Whether the speed measurement was unreliable and the conviction violated the presumption of innocence
Decisão extraída
The radar measurement was reliable; the cantonal court could rely on it without arbitrariness and the presumption of innocence was not violated.
Fundamentação extraída
The device was homologated, verified, and properly installed by a qualified operator. The appellant showed no concrete evidence of defect or improper positioning. The technical instructions are non-binding recommendations and do not limit the judge's free assessment of evidence; the alleged procedural irregularity of having only one officer present did not show any effect on the measurement.