Road Noise - Zones Where Limit Values Are Exceeded, 10pm to 6am (Ln Indicator)Bruit routier - Zones où les valeurs limites sont dépassées, de 22h à 6h (indicateur Ln)

Bruit routier - Zones où les valeurs limites sont dépassées, de 22h à 6h (indicateur Ln)Road Noise - Zones Where Limit Values Are Exceeded, 10pm to 6am (Ln Indicator)

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This API provides strategic noise mapping data produced by Impédance Ingénierie on behalf of the Aix-Marseille-Provence Metropolis. It identifies zones where road traffic noise exceeds regulatory limit values during the night period (10pm to 6am), using the Ln noise indicator as defined for type C maps. The dataset includes an associated map symbology, available as an attachment in QGIS format. It covers the metropolitan area at local scale and is useful for environmental noise assessment, urban planning, and public exposure analysis within the Aix-Marseille-Provence territory.Cartographie de Bruit Stratégique Donnée produite par Impédance ingénierie pour le compte de la métropole Aix-Marseille Provence La symbologie associée à la carte du bruit est disponible dans la partie pièce jointe, au format QGIS. Bruit routier selon l'indicateur Ln pour les cartes de type C sur...

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Trust score

How is this computed?

fair

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Data schema (20 fields)

Filterable via the API (18)

idnom_donneecodeinseenom_communecodectcodecommdatemajsourceanneecodedeptautoriteidcourbetypesourceindicetypeisophonevalidedebst_area_shst_perimet

Click a field to see example values.

Fill	Field	Type	Description
100%	id	double	Unique identifier of the record.Unique identifier of the record.
100%	nom_donneeNom donnee	text	Name of the noise mapping dataset.Name of the noise mapping dataset.
99.9%	codeinsee	text	INSEE code of the municipality.INSEE code of the municipality.
92.7%	nom_communeCommune name	text	Name of the municipality.Name of the municipality.
99.9%	codect	text	Code identifying the noise contour zone or class.Code identifying the noise contour zone or class.
99.9%	codecomm	text	Administrative code of the municipality used in the study.Administrative code of the municipality used in the study.
100%	datemaj	text	Date the data was last updated.Date the data was last updated.
100%	source	text	Organization that produced the noise data.Organization that produced the noise data.
100%	annee	text	Reference year of the noise study.Reference year of the noise study.
100%	codedept	text	Code of the department.Code of the department.
—	autorite	text	Identifier (SIREN) of the responsible authority.Identifier (SIREN) of the responsible authority.
—	idcourbe	text	Identifier of the noise level curve/contour.Identifier of the noise level curve/contour.
—	typesource	text	Type of noise map category, e.g. type C.Type of noise map category, e.g. type C.
—	indicetype	text	Type of noise indicator, here Ln (night-time).Type of noise indicator, here Ln (night-time).
—	isophone	double	Noise level threshold in decibels for the contour.Noise level threshold in decibels for the contour.
—	validedeb	text	Start date of validity for the data.Start date of validity for the data.
—	geo_shapeShape	geo_shape	Geographic polygon geometry of the noise zone.Geographic polygon geometry of the noise zone.
—	geo_point_2dGeo Point	geo_point_2d	Geographic coordinates (latitude, longitude) of the zone's center.Geographic coordinates (latitude, longitude) of the zone's center.
—	st_area_shSt area sh	double	Area of the zone's geometry.Area of the zone's geometry.
—	st_perimetSt perimet	double	Perimeter length of the zone's geometry.Perimeter length of the zone's geometry.

Schema captured from opendatasoft 2 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: 1941 · annee: 2021

{
  "id": 1941,
  "annee": "2021",
  "codect": "CT1",
  "source": "IMPEDANCE INGENIERIE",
  "datemaj": "11/06/2020",
  "autorite": "814 732 707",
  "codecomm": "131022",
  "codedept": "13",
  "idcourbe": "1941.00000000",
  "isophone": 62,
  "codeinsee": "13022",
  "geo_shape": "[large value omitted]",
  "validedeb": "11/06/2021",
  "indicetype": "Ln",
  "nom_donnee": "Bruit routier type C LN - 22h-6h (étude de bruit Impédance Ingénierie)",
  "st_area_sh": 7359.49954999,
  "st_perimet": 949.971579964,
  "typesource": "C",
  "nom_commune": "Cassis",
  "geo_point_2d": {
    "lat": 43.23864994428023,
    "lon": 5.5443685841910835
  }
}

Record 2id: 1991 · annee: 2021

{
  "id": 1991,
  "annee": "2021",
  "codect": "CT4",
  "source": "IMPEDANCE INGENIERIE",
  "datemaj": "11/06/2020",
  "autorite": "814 732 707",
  "codecomm": "131005",
  "codedept": "13",
  "idcourbe": "1991.00000000",
  "isophone": 62,
  "codeinsee": "13005",
  "geo_shape": {
    "type": "Feature",
    "geometry": {
      "type": "Polygon",
      "coordinates": [
        [
          [
            5.571427612358227,
            43.29010405678083
          ],
          [
            5.571414394030674,
            43.29011985196437
          ],
          [
            5.571416451509123,
            43.290121783083244
          ],
          [
            5.571442739579826,
            43.29012277757236
          ],
          [
            5.571459211303896,
            43.29011086512404
          ],
          [
            5.571489235697077,
            43.290085129605714
          ],
          [
            5.571501030389967,
            43.29007332845267
          ],
          [
            5.571506598593317,
            43.290068335745055
          ],
          [
            5.571539856646325,
            43.29003775306513
          ],
          [
            5.5715749756664,
            43.29000469598828
          ],
          [
            5.571614817316528,
            43.28996702632485
          ],
          [
            5.571583618183081,
            43.28996641876615
          ],
          [
            5.571569814167279,
            43.28997736771018
          ],
          [
            5.571563277384722,
            43.2899827434862
          ],
          [
            5.571562829175516,
            43.28998374419294
          ],
          [
            5.571522974230514,
            43.29001835402892
          ],
          [
            5.571483726614479,
            43.290052769389774
          ],
          [
            5.571446107048803,
            43.29008777601881
          ],
          [
            5.57143562089291,
            43.29009576587292
          ],
          [
            5.571427612358227,
            43.29010405678083
          ]
        ]
      ]
    },
    "properties": {}
  },
  "validedeb": "11/06/2021",
  "indicetype": "Ln",
  "nom_donnee": "Bruit routier type C LN - 22h-6h (étude de bruit Impédance Ingénierie)",
  "st_area_sh": 52.7678000016,
  "st_perimet": 49.1526292981,
  "typesource": "C",
  "nom_commune": "Aubagne",
  "geo_point_2d": {
    "lat": 43.29004604386812,
    "lon": 5.571511395321059
  }
}

Record 3id: 2000 · annee: 2021

{
  "id": 2000,
  "annee": "2021",
  "codect": "CT4",
  "source": "IMPEDANCE INGENIERIE",
  "datemaj": "11/06/2020",
  "autorite": "814 732 707",
  "codecomm": "131005",
  "codedept": "13",
  "idcourbe": "2000.00000000",
  "isophone": 62,
  "codeinsee": "13005",
  "geo_shape": {
    "type": "Feature",
    "geometry": {
      "type": "Polygon",
      "coordinates": [
        [
          [
            5.588049208016153,
            43.26749086762312
          ],
          [
            5.588054026373053,
            43.267502182516395
          ],
          [
            5.588056906494397,
            43.2675059836243
          ],
          [
            5.588059734175816,
            43.26750861595367
          ],
          [
            5.588080286297261,
            43.267521983937144
          ],
          [
            5.588077400139791,
            43.26753177337986
          ],
          [
            5.588089517602599,
            43.26752185275607
          ],
          [
            5.588090372759706,
            43.26751895218037
          ],
          [
            5.588095435115601,
            43.26749453016029
          ],
          [
            5.588106443264441,
            43.26747635586731
          ],
          [
            5.588109430243084,
            43.26745783374827
          ],
          [
            5.588108121274998,
            43.26745336497763
          ],
          [
            5.588106509771873,
            43.26744764341838
          ],
          [
            5.588094654447782,
            43.26740850630297
          ],
          [
            5.588094065513807,
            43.26740636034977
          ],
          [
            5.588093767012973,
            43.26740519746712
          ],
          [
            5.588093738775617,
            43.26740456812498
          ],
          [
            5.588088339560946,
            43.267396777256174
          ],
          [
            5.588071432001688,
            43.26739052216651
          ],
          [
            5.588069628898212,
            43.267383275152376
          ],
          [
            5.588052455115823,
            43.267376576425306
          ],
          [
            5.588059294394079,
            43.26739999325711
          ],
          [
            5.588037875073702,
            43.26741121678013
          ],
          [
            5.588038496276218,
            43.26741408198183
          ],
          [
            5.588038933960083,
            43.26744854252023
          ],
          [
            5.58803891984318,
            43.26745097293079
          ],
          [
            5.588049208016153,
            43.26749086762312
          ]
        ]
      ]
    },
    "properties": {}
  },
  "validedeb": "11/06/2021",
  "indicetype": "Ln",
  "nom_donnee": "Bruit routier type C LN - 22h-6h (étude de bruit Impédance Ingénierie)",
  "st_area_sh": 62.5111499642,
  "st_perimet": 39.0663330357,
  "typesource": "C",
  "nom_commune": "Aubagne",
  "geo_point_2d": {
    "lat": 43.26745216153877,
    "lon": 5.588072629845889
  }
}

Record 4id: 366 · annee: 2021

{
  "id": 366,
  "annee": "2021",
  "codect": "CT1",
  "source": "IMPEDANCE INGENIERIE",
  "datemaj": "11/06/2020",
  "autorite": "814 732 707",
  "codecomm": "131215",
  "codedept": "13",
  "idcourbe": "366.00000000",
  "isophone": 62,
  "codeinsee": "13215",
  "geo_shape": {
    "type": "Feature",
    "geometry": {
      "type": "Polygon",
      "coordinates": [
        [
          [
            5.350487561042973,
            43.365613880277394
          ],
          [
            5.350456026756321,
            43.365599895152755
          ],
          [
            5.35044082647167,
            43.365599235344504
          ],
          [
            5.350379419459871,
            43.36560290932231
          ],
          [
            5.350426797487284,
            43.3656212303451
          ],
          [
            5.350447057802728,
            43.36562799030435
          ],
          [
            5.350491896535477,
            43.3656354763389
          ],
          [
            5.350495862600748,
            43.36563593018672
          ],
          [
            5.350516673741891,
            43.3656350280806
          ],
          [
            5.350505293330127,
            43.36562519519505
          ],
          [
            5.350487561042973,
            43.365613880277394
          ]
        ]
      ]
    },
    "properties": {}
  },
  "validedeb": "11/06/2021",
  "indicetype": "Ln",
  "nom_donnee": "Bruit routier type C LN - 22h-6h (étude de bruit Impédance Ingénierie)",
  "st_area_sh": 21.7054500049,
  "st_perimet": 24.4676820049,
  "typesource": "C",
  "nom_commune": "Marseille 15e  Arrondissement",
  "geo_point_2d": {
    "lat": 43.36561612922292,
    "lon": 5.350453115238909
  }
}

Record 5id: 147 · annee: 2021

{
  "id": 147,
  "annee": "2021",
  "codect": "Null",
  "source": "IMPEDANCE INGENIERIE",
  "datemaj": "11/06/2020",
  "autorite": "814 732 707",
  "codecomm": "Null",
  "codedept": "13",
  "idcourbe": "147.00000000",
  "isophone": 62,
  "codeinsee": "Null",
  "geo_shape": "[large value omitted]",
  "validedeb": "11/06/2021",
  "indicetype": "Ln",
  "nom_donnee": "Bruit routier type C LN - 22h-6h (étude de bruit Impédance Ingénierie)",
  "st_area_sh": 898.478050037,
  "st_perimet": 168.58989509,
  "typesource": "C",
  "nom_commune": null,
  "geo_point_2d": {
    "lat": 43.28289767883933,
    "lon": 5.391661014909491
  }
}

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-routier-type-c-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-routier-type-c-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 2 days ago

Dataset

Volume & freshness

Records

2.1k

2063

Last upstream update

7 months ago

2026-04-07

License

No license declared upstream.

○ Documentation○ Data dictionary○ Versioning

Source: opendatasoft

Machine-readable & source

JSON

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