Key legal question
Whether the Post had to use federal administrative traffic-regulation procedures instead of cantonal possession-protection proceedings to obtain the parking prohibition.
Extracted holding
No. Federal law does not exclude the Post, for its financial or administrative property, from invoking possession protection under cantonal law.
Extracted reasoning
Art. 2(5) SVG and the related ordinances permit the competent federal bodies to regulate traffic themselves, but they do not impose an exclusive federal procedure. The Post’s parking spaces were not shown to be dedicated to public use, so they could be treated like private property for possession protection purposes.