Type A Railway Noise Map (Lden)Bruit ferroviaire Lden de type A

Bruit ferroviaire Lden de type AType A Railway Noise Map (Lden)

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Dataset published by Métropole Aix-Marseille-Provence providing railway noise levels across the metropolitan area, measured using the Lden indicator (day-evening-night noise level) and presented as a type A isophone (noise contour) map. It is part of the metropolitan noise observatory's broader environmental noise monitoring, covering local railway infrastructure. The data can be used for noise exposure assessment, urban planning, and environmental impact studies related to rail traffic within the Aix-Marseille Provence metropolitan territory.Bruit ferroviaire selon l'indicateur Lden carte de type A 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 (latitude, longitude) of the feature.Geographic centroid coordinates (latitude, longitude) of the feature.
—	geo_shapeShape	geo_shape	Geometric shape (polygon) defining the noise contour area.Geometric shape (polygon) defining 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.Name of the dataset, e.g. railway noise.
—	codeinsee	text	INSEE code of the associated municipality.INSEE code of the associated municipality.
—	codect	text	Code identifying the associated territorial or urban district (canton/EPCI).Code identifying the associated territorial or urban district (canton/EPCI).
—	codecomm	text	Code identifying the associated commune.Code identifying the associated commune.
—	datemaj	text	Date the record was last updated.Date the record was last updated.
—	source	text	Organization or company that produced the noise data.Organization or company 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 French department covered by the record.Code of the French department covered by the record.
100%	autorite	text	Identifier (e.g. SIREN number) of the responsible authority.Identifier (e.g. SIREN number) of the responsible authority.
100%	idcourbe	double	Identifier of the specific noise contour curve.Identifier of the specific noise contour curve.
100%	typesource	text	Type of noise map, here type A.Type of noise map, here type A.
100%	indicetype	text	Type of noise indicator used, here Lden.Type of noise indicator used, here Lden.
100%	isophone	double	Noise level threshold in decibels for the contour line.Noise level threshold in decibels for the contour line.
100%	validedeb	text	Start date of validity for the record.Start date of validity for the record.

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: 157 · annee: 2022

{
  "id": 157,
  "annee": "2022",
  "codect": "CT1",
  "source": "IMPEDANCE INGENIERIE",
  "datemaj": "31/05/2022",
  "autorite": "814 732 707",
  "codecomm": "132106",
  "codedept": "13",
  "idcourbe": 157,
  "isophone": 70,
  "codeinsee": "13106",
  "geo_shape": {
    "type": "Feature",
    "geometry": {
      "type": "Polygon",
      "coordinates": [
        [
          [
            5.36464588542802,
            43.394088689326175
          ],
          [
            5.364633320025401,
            43.39407449839204
          ],
          [
            5.364627394715833,
            43.39408118888045
          ],
          [
            5.364631936325318,
            43.3940998810603
          ],
          [
            5.364648764729608,
            43.394104829270006
          ],
          [
            5.36464588542802,
            43.394088689326175
          ]
        ]
      ]
    },
    "properties": {}
  },
  "validedeb": "31/05/2022",
  "indicetype": "Lden",
  "nom_donnee": "BRUIT_FERROVIAIRE",
  "typesource": "A",
  "geo_point_2d": {
    "lat": 43.39409074098002,
    "lon": 5.364637664582021
  }
}

Record 2id: 300 · annee: 2022

{
  "id": 300,
  "annee": "2022",
  "codect": "CT2",
  "source": "IMPEDANCE INGENIERIE",
  "datemaj": "31/05/2022",
  "autorite": "814 732 707",
  "codecomm": "132001",
  "codedept": "13",
  "idcourbe": 300,
  "isophone": 65,
  "codeinsee": "13001",
  "geo_shape": {
    "type": "Feature",
    "geometry": {
      "type": "Polygon",
      "coordinates": [
        [
          [
            5.42764029566936,
            43.52417428299689
          ],
          [
            5.427631892048934,
            43.524169578035476
          ],
          [
            5.427628249104379,
            43.52417228625121
          ],
          [
            5.427634943268185,
            43.52417978637107
          ],
          [
            5.427643270435157,
            43.52418225237139
          ],
          [
            5.42764029566936,
            43.52417428299689
          ]
        ]
      ]
    },
    "properties": {}
  },
  "validedeb": "31/05/2022",
  "indicetype": "Lden",
  "nom_donnee": "BRUIT_FERROVIAIRE",
  "typesource": "A",
  "geo_point_2d": {
    "lat": 43.52417579478811,
    "lon": 5.427635945467221
  }
}

Record 3id: 608 · annee: 2022

{
  "id": 608,
  "annee": "2022",
  "codect": "CT2",
  "source": "IMPEDANCE INGENIERIE",
  "datemaj": "31/05/2022",
  "autorite": "814 732 707",
  "codecomm": "132114",
  "codedept": "13",
  "idcourbe": 608,
  "isophone": 60,
  "codeinsee": "13114",
  "geo_shape": {
    "type": "Feature",
    "geometry": {
      "type": "Polygon",
      "coordinates": [
        [
          [
            5.323323255387625,
            43.55528228830848
          ],
          [
            5.32333668668375,
            43.5552172418334
          ],
          [
            5.323184396392018,
            43.55517867751528
          ],
          [
            5.323221881776719,
            43.55526935595255
          ],
          [
            5.323251807768872,
            43.55530261338368
          ],
          [
            5.323305904241765,
            43.55531579697314
          ],
          [
            5.323323255387625,
            43.55528228830848
          ]
        ]
      ]
    },
    "properties": {}
  },
  "validedeb": "31/05/2022",
  "indicetype": "Lden",
  "nom_donnee": "BRUIT_FERROVIAIRE",
  "typesource": "A",
  "geo_point_2d": {
    "lat": 43.55524584784047,
    "lon": 5.3232667323239715
  }
}

Record 4id: 720 · annee: 2022

{
  "id": 720,
  "annee": "2022",
  "codect": "Null",
  "source": "IMPEDANCE INGENIERIE",
  "datemaj": "31/05/2022",
  "autorite": "814 732 707",
  "codecomm": "Null",
  "codedept": "13",
  "idcourbe": 720,
  "isophone": 60,
  "codeinsee": "Null",
  "geo_shape": "[large value omitted]",
  "validedeb": "31/05/2022",
  "indicetype": "Lden",
  "nom_donnee": "BRUIT_FERROVIAIRE",
  "typesource": "A",
  "geo_point_2d": {
    "lat": 43.35404946396764,
    "lon": 5.282544639832261
  }
}

Record 5id: 505 · annee: 2022

{
  "id": 505,
  "annee": "2022",
  "codect": "CT5",
  "source": "IMPEDANCE INGENIERIE",
  "datemaj": "31/05/2022",
  "autorite": "814 732 707",
  "codecomm": "132063",
  "codedept": "13",
  "idcourbe": 505,
  "isophone": 60,
  "codeinsee": "13063",
  "geo_shape": {
    "type": "Feature",
    "geometry": {
      "type": "Polygon",
      "coordinates": [
        [
          [
            5.002309085279242,
            43.60308617469248
          ],
          [
            5.002338138681837,
            43.6030608124295
          ],
          [
            5.002297035840603,
            43.60307572714669
          ],
          [
            5.002282566193217,
            43.60307518036719
          ],
          [
            5.002259861085114,
            43.60309813892176
          ],
          [
            5.002295090732177,
            43.60309310920874
          ],
          [
            5.002309085279242,
            43.60308617469248
          ]
        ]
      ]
    },
    "properties": {}
  },
  "validedeb": "31/05/2022",
  "indicetype": "Lden",
  "nom_donnee": "BRUIT_FERROVIAIRE",
  "typesource": "A",
  "geo_point_2d": {
    "lat": 43.60308229400328,
    "lon": 5.002295790723902
  }
}

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_a_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_a_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

858

Last upstream update

4 years ago

2023-05-25

License

No license declared upstream.

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Source: opendatasoft

Machine-readable & source

JSON

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