Weiß jemand, wofür dieses Zeichen stehen könnte?

Bus stop.

Considering there is a lot of march land in the March. Maybe the locations of tunnels under the road so small critters can safely cross? [https://de.wikipedia.org/wiki/Amphibiendurchlass](https://de.wikipedia.org/wiki/Amphibiendurchlass)

At least the second photo was taken near a designate reptilian habitat. [https://www.sz.ch/umweltdepartement/amt-fuer-wald-und-natur/natur-und-landschaft/artenschutz/amphibien-und-reptilien.html/8756-8758-8802-9447-9454-9459-10665-10666](https://www.sz.ch/umweltdepartement/amt-fuer-wald-und-natur/natur-und-landschaft/artenschutz/amphibien-und-reptilien.html/8756-8758-8802-9447-9454-9459-10665-10666)

This is a long shot, but it could be signaling a route, e.g. the blue route to avoid specific areas for long vehicles. Or there is a large structure where the navigator sends you the wrong way and this tells you where to go in spite of what the nav says.

It’s an eye from Globi… Globi is always watching you 👀

Gemini is very confident:

What it means
The sign is used to alert snowplow operators to specific road infrastructure that is hidden under the snow or requires manual intervention. Specifically:
• Obstacles: It often marks the beginning or end of a median strip, a traffic island, or a narrowing of the road.
• The „Hole“ Logic: The blue circle inside the yellow circle visually represents a „clearance“ or a specific point where the plow blade needs to be raised, lowered, or shifted to avoid hitting a curb or damaging the machinery.
• Placement: You will usually see these on cantonal roads or near highway entrances/exits where the road geometry changes abruptly.