Charente 24H Strategic Noise Maps for Land Transport Infrastructure

Polygons from 2020 show areas in Charente, France, exceeding 24-hour weighted average noise exposure limits (Lden) for land transport infrastructure. The data, aggregated by DDT Charente from CEREMA, uses a calculation method that yields approximate and often conservative values. In-situ measurements are noted as a more accurate method for determining actual sound exposure levels.

Use Cases

• Identify residential zones potentially affected by high transport noise based on the Lden zoning.
• Model population exposure to environmental noise for health impact studies based on the described weighting periods.
• Inform land-use planning and noise mitigation strategies around transport corridors in Charente.
• Compare modeled noise exposure from the dataset with actual in-situ noise control measurements.

Strengths

• Provides geospatial polygons for noise exposure analysis.
• Specifies the precise Lden weighting formula (day, evening +5 dB, night +10 dB).
• Explicitly states the data source (CEREMA) and aggregating organization (DDT Charente).

Limitations

• The description notes the calculation method gives approximate and often higher-than-reality values.
• Last updated 2020-09-09 00:00:00; freshness should be verified.
• Column-level documentation is absent; field semantics must be inferred after download.

Provenance

Source

BUREAU DE RECHERCHES GÉOLOGIQUES ET MINIÈRES

Collection Method

Calculated noise zoning (CEREMA data aggregated by DDT Charente).

Freshness

Last updated 2020-09-09 00:00:00

Geography

Charente, France