Railway Noise Lden (Type C Maps)Bruit ferroviaire Lden de type C

Bruit ferroviaire Lden de type CRailway Noise Lden (Type C Maps)

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This API provides data on railway noise levels for the Aix-Marseille Provence metropolitan area, measured according to the Lden (day-evening-night) noise indicator, as used in Type C noise maps. It is published and maintained by Métropole Aix-Marseille-Provence and covers the local metropolitan territory. The dataset forms part of the noise observatory for the metropolis, offering geolocated noise contour data useful for environmental assessment, urban planning, and public information on railway-related noise exposure within the region.Bruit ferroviaire selon l'indicateur Lden pour les cartes de type C sur la Métropole Aix-Marseille Provence

environment

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Trust score

How is this computed?

fair

Weighted across five axes. Tap a ring for what it measures.

Data schema (17 fields)

Filterable via the API (15)

idnom_donneecodeinseecodectcodecommdatemajsourceanneecodedeptautoriteidcourbetypesourceindicetypeisophonevalidedeb

Click a field to see example values.

Fill	Field	Type	Description
—	geo_point_2dGeo Point	geo_point_2d	Geographic centroid coordinates of the noise contour.Geographic centroid coordinates of the noise contour.
—	geo_shapeShape	geo_shape	Geographic shape (polygon) of the noise contour area.Geographic shape (polygon) of the noise contour area.
—	id	double	Unique numeric identifier of the record.Unique numeric identifier of the record.
—	nom_donneeNom donnee	text	Name of the dataset, e.g. railway noise category.Name of the dataset, e.g. railway noise category.
—	codeinsee	text	INSEE code of the municipality concerned.INSEE code of the municipality concerned.
—	codect	text	Territorial collectivity code.Territorial collectivity code.
—	codecomm	text	Municipality code.Municipality code.
—	datemaj	text	Date the record was last updated.Date the record was last updated.
—	source	text	Organization or company that produced the data.Organization or company that produced the data.
—	annee	text	Year the noise data was produced.Year the noise data was produced.
100%	codedept	text	Department code where the area is located.Department code where the area is located.
100%	autorite	text	Identifier (e.g. SIREN) of the responsible authority.Identifier (e.g. SIREN) of the responsible authority.
100%	idcourbe	double	Identifier of the noise contour curve.Identifier of the noise contour curve.
100%	typesource	text	Type of noise map source, e.g. category C.Type of noise map source, e.g. category C.
100%	indicetype	text	Type of noise indicator used, e.g. Lden.Type of noise indicator used, e.g. Lden.
100%	isophone	double	Noise level threshold in decibels for the contour.Noise level threshold in decibels for the contour.
100%	validedeb	text	Start date of validity for the data.Start date of validity for the data.

Schema captured from opendatasoft 3 days ago.

Query the data

Pick columns and a sort, then fetch a live preview straight from the source. Choose an API-filterable column (marked ▾) under “Where” to pick from its list of values.

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Sample data (5 records)

Record 1id: 106 · annee: 2022

{
  "id": 106,
  "annee": "2022",
  "codect": "CT1",
  "source": "IMPEDANCE INGENIERIE",
  "datemaj": "31/05/2022",
  "autorite": "814 732 707",
  "codecomm": "131022",
  "codedept": "13",
  "idcourbe": 106,
  "isophone": 73,
  "codeinsee": "13022",
  "geo_shape": "[large value omitted]",
  "validedeb": "31/05/2022",
  "indicetype": "Lden",
  "nom_donnee": "BRUIT_FERROVIAIRE",
  "typesource": "C",
  "geo_point_2d": {
    "lat": 43.23435746709383,
    "lon": 5.554548236940642
  }
}

Record 2id: 91 · annee: 2022

{
  "id": 91,
  "annee": "2022",
  "codect": "Null",
  "source": "IMPEDANCE INGENIERIE",
  "datemaj": "31/05/2022",
  "autorite": "814 732 707",
  "codecomm": "Null",
  "codedept": "13",
  "idcourbe": 91,
  "isophone": 73,
  "codeinsee": "Null",
  "geo_shape": "[large value omitted]",
  "validedeb": "31/05/2022",
  "indicetype": "Lden",
  "nom_donnee": "BRUIT_FERROVIAIRE",
  "typesource": "C",
  "geo_point_2d": {
    "lat": 43.300013568759674,
    "lon": 5.38329920929001
  }
}

Record 3id: 36 · annee: 2022

{
  "id": 36,
  "annee": "2022",
  "codect": "CT6",
  "source": "IMPEDANCE INGENIERIE",
  "datemaj": "31/05/2022",
  "autorite": "814 732 707",
  "codecomm": "132056",
  "codedept": "13",
  "idcourbe": 36,
  "isophone": 73,
  "codeinsee": "13056",
  "geo_shape": "[large value omitted]",
  "validedeb": "31/05/2022",
  "indicetype": "Lden",
  "nom_donnee": "BRUIT_FERROVIAIRE",
  "typesource": "C",
  "geo_point_2d": {
    "lat": 43.397324751267185,
    "lon": 5.025416867031211
  }
}

Record 4id: 1 · annee: 2022

{
  "id": 1,
  "annee": "2022",
  "codect": "CT1",
  "source": "IMPEDANCE INGENIERIE",
  "datemaj": "31/05/2022",
  "autorite": "814 732 707",
  "codecomm": "132104",
  "codedept": "13",
  "idcourbe": 1,
  "isophone": 73,
  "codeinsee": "13104",
  "geo_shape": {
    "type": "Feature",
    "geometry": {
      "type": "Polygon",
      "coordinates": [
        [
          [
            5.114345936079661,
            43.3330878678794
          ],
          [
            5.114314916943035,
            43.33309263833911
          ],
          [
            5.114322708933514,
            43.333102473858325
          ],
          [
            5.114353055126808,
            43.33310755385746
          ],
          [
            5.114376652679701,
            43.33310049009573
          ],
          [
            5.114345936079661,
            43.3330878678794
          ]
        ]
      ]
    },
    "properties": {}
  },
  "validedeb": "31/05/2022",
  "indicetype": "Lden",
  "nom_donnee": "BRUIT_FERROVIAIRE",
  "typesource": "C",
  "geo_point_2d": {
    "lat": 43.33309785873005,
    "lon": 5.114344025869964
  }
}

Record 5id: 88 · annee: 2022

{
  "id": 88,
  "annee": "2022",
  "codect": "CT1",
  "source": "IMPEDANCE INGENIERIE",
  "datemaj": "31/05/2022",
  "autorite": "814 732 707",
  "codecomm": "131213",
  "codedept": "13",
  "idcourbe": 88,
  "isophone": 73,
  "codeinsee": "13213",
  "geo_shape": "[large value omitted]",
  "validedeb": "31/05/2022",
  "indicetype": "Lden",
  "nom_donnee": "BRUIT_FERROVIAIRE",
  "typesource": "C",
  "geo_point_2d": {
    "lat": 43.321102427445034,
    "lon": 5.416704493411433
  }
}

Live sample captured at profiling time — values may have changed upstream.

Verification Status

Using the API

Configuration

Base URL: https://data.ampmetropole.fr/api/explore/v2.1/catalog/datasets/observatoire-du-bruit-n_bruit_isophone_ferroviaire_c_lden

License

Licence Ouverte 2.0 (France / Etalab)Open

✓ Redistributable
✓ Attribution required

Query examples

curl -s 'https://data.ampmetropole.fr/api/explore/v2.1/catalog/datasets/observatoire-du-bruit-n_bruit_isophone_ferroviaire_c_lden/records?limit=20' -H 'Accept: application/json'

First 20 records of the dataset as JSON.

Uses the Opendatasoft Explore v2.1 syntax — supports select, where, group_by and order_by.

Full API documentation ↗

Rate limits

5 000 req/day

per ipmeasured

observed 3 days ago

Dataset

Volume & freshness

Records

113

Last upstream update

2 years ago

2025-04-24

License

No license declared upstream.

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Source: opendatasoft

Machine-readable & source

JSON

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