Key legal question
Whether the posted 100 km/h speed limit on the motorway junction was invalid or could be ignored because its usefulness and legal basis were challenged.
Extracted holding
The posted 100 km/h limit had to be obeyed under Art. 27 SVG even assuming doubts about its formal legality; the court would not review whether the underlying traffic order was still sensible.
Extracted reasoning
A driver must comply with a signal that is not obviously defective. The signal was in fact based on a 1973 order by the Federal Department of the Interior, and the criminal court does not have to examine whether such a speed restriction remains expedient after later road modifications.