Airborne noise - Areas exposed, 10pm to 6am (Ln indicator)Bruit aérien - Zones exposées, de 22h à 6h (indicateur Ln)

Bruit aérien - Zones exposées, de 22h à 6h (indicateur Ln)Airborne noise - Areas exposed, 10pm to 6am (Ln indicator)

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This API provides airborne noise data using the Ln (night-time level) indicator for type-A noise maps covering the Aix-Marseille Provence metropolitan area. Type-A maps identify zones exposed to noise, with the Ln indicator, expressed in A-weighted decibels (dB(A)), representing the level of noise exposure between 10pm and 6am. The dataset is published by Métropole Aix-Marseille-Provence and is useful for urban planning, environmental noise assessment, and public health studies related to nocturnal noise pollution within the metropolitan territory.Bruit aérien selon l'indicateur Ln pour les cartes de type A sur la Métropole Aix-Marseille Provence. La carte de type A localise les zones exposées au bruit. La valeur de l’indice de bruit Ln « Level night », exprimée en décibels pondérés A (dB(A)), représente le niveau d’exposition au bruit en...

environment

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Data schema (19 fields)

Filterable via the API (17)

idnom_donneecodeinseecodectcodecommdatemajsourceanneecodedeptautoriteidcourbetypesourceindicetypeisophonevalidedebst_area_shst_perimet

Click a field to see example values.

Fill	Field	Type	Description
—	geo_point_2dGeo Point	geo_point_2d	Geographic centroid coordinates of the noise zone.Geographic centroid coordinates of the noise zone.
—	geo_shapeShape	geo_shape	Geometry outlining the boundary of the noise exposure zone.Geometry outlining the boundary of the noise exposure zone.
—	id	double	Unique identifier of the record.Unique identifier of the record.
—	nom_donneeNom donnee	text	Name of the dataset or indicator represented.Name of the dataset or indicator represented.
—	codeinsee	text	INSEE code of the municipality concerned.INSEE code of the municipality concerned.
—	codect	text	Code identifying the territorial collectivity.Code identifying the territorial collectivity.
—	codecomm	int	INSEE numeric code of the municipality.INSEE numeric code of the municipality.
—	datemaj	text	Date the record was last updated.Date the record was last updated.
—	source	text	Organization that produced the noise data.Organization that produced the noise data.
—	annee	text	Year the noise data refers to.Year the noise data refers to.
100%	codedept	text	Code of the department concerned.Code of the department concerned.
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 source, map type A.Type of noise source, map type A.
100%	indicetype	text	Type of noise indicator, here Ln (night level).Type of noise indicator, here Ln (night level).
100%	isophone	double	Noise level threshold in decibels dB(A) for the contour.Noise level threshold in decibels dB(A) for the contour.
100%	validedeb	text	Start date of validity of the data.Start date of validity of the data.
100%	st_area_shSt area sh	double	Area of the zone's geometry, in square meters.Area of the zone's geometry, in square meters.
100%	st_perimetSt perimet	double	Perimeter length of the zone's geometry, in meters.Perimeter length of the zone's geometry, in meters.

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: 6 · annee: 2020

{
  "id": 6,
  "annee": "2020",
  "codect": "CT1",
  "source": "IMPEDANCE INGENIERIE",
  "datemaj": "12/10/2020",
  "autorite": "814 732 707",
  "codecomm": 132054,
  "codedept": "13",
  "idcourbe": 6,
  "isophone": 65,
  "codeinsee": "13054",
  "geo_shape": "[large value omitted]",
  "validedeb": "12/10/2020",
  "indicetype": "Ln",
  "nom_donnee": "Bruit aérien selon l'indicateur Ln pour les cartes de type A",
  "st_area_sh": 5511.70401107,
  "st_perimet": 486.752316883,
  "typesource": "A",
  "geo_point_2d": {
    "lat": 43.43129116694767,
    "lon": 5.227158190487396
  }
}

Record 2id: 3 · annee: 2020

{
  "id": 3,
  "annee": "2020",
  "codect": "CT1",
  "source": "IMPEDANCE INGENIERIE",
  "datemaj": "12/10/2020",
  "autorite": "814 732 707",
  "codecomm": 0,
  "codedept": "13",
  "idcourbe": 3,
  "isophone": 55,
  "codeinsee": "Null",
  "geo_shape": "[large value omitted]",
  "validedeb": "12/10/2020",
  "indicetype": "Ln",
  "nom_donnee": "Bruit aérien selon l'indicateur Ln pour les cartes de type A",
  "st_area_sh": 3693250.04608,
  "st_perimet": 27332.7123153,
  "typesource": "A",
  "geo_point_2d": {
    "lat": 43.44266453177177,
    "lon": 5.206753856076093
  }
}

Record 3id: 1 · annee: 2020

{
  "id": 1,
  "annee": "2020",
  "codect": "CT1",
  "source": "IMPEDANCE INGENIERIE",
  "datemaj": "12/10/2020",
  "autorite": "814 732 707",
  "codecomm": 0,
  "codedept": "13",
  "idcourbe": 1,
  "isophone": 55,
  "codeinsee": "Null",
  "geo_shape": {
    "type": "Feature",
    "geometry": {
      "type": "Polygon",
      "coordinates": [
        [
          [
            5.241846601842334,
            43.42145438920629
          ],
          [
            5.240779699608529,
            43.42175224756656
          ],
          [
            5.240227767279444,
            43.42203692529629
          ],
          [
            5.239656216334016,
            43.42290659854327
          ],
          [
            5.239654982053458,
            43.422906738368745
          ],
          [
            5.23910331652085,
            43.422967314414045
          ],
          [
            5.238737972935954,
            43.42306663843459
          ],
          [
            5.238756641615463,
            43.42342588285254
          ],
          [
            5.239158002046437,
            43.42404414541818
          ],
          [
            5.239171029783985,
            43.42431351173944
          ],
          [
            5.239171034867537,
            43.42431361063574
          ],
          [
            5.239117671241678,
            43.424341567553256
          ],
          [
            5.238810462947439,
            43.42450309664062
          ],
          [
            5.237428044777885,
            43.424652871842454
          ],
          [
            5.237154917537379,
            43.42468253959927
          ],
          [
            5.236695122739317,
            43.42481720690724
          ],
          [
            5.235804381618209,
            43.42507857706484
          ],
          [
            5.235582009126645,
            43.42511176693105
          ],
          [
            5.235437589912999,
            43.42513370382005
          ],
          [
            5.234493371931701,
            43.425968274712474
          ],
          [
            5.234066915098662,
            43.42639493676568
          ],
          [
            5.233847588113402,
            43.42661501793485
          ],
          [
            5.233462744689954,
            43.427569526479715
          ],
          [
            5.233435917420839,
            43.42792264448707
          ],
          [
            5.233418339674763,
            43.42815447775039
          ],
          [
            5.233509347676929,
            43.42840934168239
          ],
          [
            5.23384913077727,
            43.42935772735083
          ],
          [
            5.233931301515828,
            43.42984195679132
          ],
          [
            5.23431812887135,
            43.429510652428064
          ],
          [
            5.234912097147367,
            43.428908602013834
          ],
          [
            5.23533606502911,
            43.42839908985919
          ],
          [
            5.236459124936787,
            43.42678478041209
          ],
          [
            5.237325792441964,
            43.42595815032592
          ],
          [
            5.237895225607924,
            43.4253950408986
          ],
          [
            5.238844858570565,
            43.42468146927916
          ],
          [
            5.239694912218475,
            43.42420826284676
          ],
          [
            5.240643750413711,
            43.42364400194841
          ],
          [
            5.240815333732056,
            43.42285667982444
          ],
          [
            5.240960534973728,
            43.422507820656904
          ],
          [
            5.241468535535691,
            43.42182154863902
          ],
          [
            5.241846601842334,
            43.42145438920629
          ]
        ]
      ]
    },
    "properties": {}
  },
  "validedeb": "12/10/2020",
  "indicetype": "Ln",
  "nom_donnee": "Bruit aérien selon l'indicateur Ln pour les cartes de type A",
  "st_area_sh": 129287.424692,
  "st_perimet": 2529.38150342,
  "typesource": "A",
  "geo_point_2d": {
    "lat": 43.42587264264813,
    "lon": 5.236578788023807
  }
}

Record 4id: 4 · annee: 2020

{
  "id": 4,
  "annee": "2020",
  "codect": "CT1",
  "source": "IMPEDANCE INGENIERIE",
  "datemaj": "12/10/2020",
  "autorite": "814 732 707",
  "codecomm": 132054,
  "codedept": "13",
  "idcourbe": 4,
  "isophone": 60,
  "codeinsee": "13054",
  "geo_shape": "[large value omitted]",
  "validedeb": "12/10/2020",
  "indicetype": "Ln",
  "nom_donnee": "Bruit aérien selon l'indicateur Ln pour les cartes de type A",
  "st_area_sh": 1501613.93678,
  "st_perimet": 24592.7466639,
  "typesource": "A",
  "geo_point_2d": {
    "lat": 43.438636774601235,
    "lon": 5.21147790112891
  }
}

Record 5id: 2 · annee: 2020

{
  "id": 2,
  "annee": "2020",
  "codect": "CT1",
  "source": "IMPEDANCE INGENIERIE",
  "datemaj": "12/10/2020",
  "autorite": "814 732 707",
  "codecomm": 0,
  "codedept": "13",
  "idcourbe": 2,
  "isophone": 50,
  "codeinsee": "Null",
  "geo_shape": "[large value omitted]",
  "validedeb": "12/10/2020",
  "indicetype": "Ln",
  "nom_donnee": "Bruit aérien selon l'indicateur Ln pour les cartes de type A",
  "st_area_sh": 9379710.41965,
  "st_perimet": 43700.4020148,
  "typesource": "A",
  "geo_point_2d": {
    "lat": 43.44621577237723,
    "lon": 5.202061888814335
  }
}

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/bruit-aerien-type-a-ln-22h-6h-etude-de-bruit-impedance-ingenierie

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/bruit-aerien-type-a-ln-22h-6h-etude-de-bruit-impedance-ingenierie/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

Last upstream update

7 months ago

2026-04-07

License

No license declared upstream.

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Source: opendatasoft

Machine-readable & source

JSON

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