If you like it, please consider a donation:
the instructions are for version 0.0.1
First this Adapter / homepage is only for Germany. you become your API (free of charge) from "https://www.eiswarnung.de/rest-api/".
When you installed this adapter, the adapter will automatic fill out the longitude and latiude from iobroker-settings (if you fill out the settigngs). If you don't fill out the iobroker settings you can find your data at https://www.gpskoordinaten.de/.
The data is retrieved every hour.
Have fun with the adapter.