Traffic noise at an address

Noise bands per source (road, railway, aircraft, industry) from the Danish EPA’s mapping under the EU Environmental Noise Directive, 2022 round. Lden and Lnight at 1.5 m height, always as 5 dB bands. ALWAYS answers 200: if the address is not covered by the mapping, it returns kortlagt=false and an explanatory note. ⚠️ Missing data does NOT mean it is quiet — only major roads, major railways, major airports and urban areas above 100,000 inhabitants are mapped (13.9% of the country’s addresses). When maks=null (aabent_baand=true) only the lower bound of the band is known, and over_graensevaerdi is then null rather than false.

curl --request GET \
  --url "https://api.danskadresseapi.dk/v1/stoej/<adgangsadresseid>" \
  --header "Authorization: Bearer $API_NOEGLE"

{
  "count": 0,
  "kilde": "…",
  "aargang": 0,
  "results": [
    {}
  ],
  "kortlagt": false,
  "bemaerkning": null,
  "adgangsadresse": {}
}

{
  "error": {
    "code": "unauthorized",
    "message": "Missing or invalid API key."
  }
}