Noise Limit Exceedance Areas in Charente-Maritime Under Prefectural Decree 18-1536

A GIS layer from April 2018 identifies areas in Charente-Maritime, France, where buildings are likely to exceed legal noise limits. The Bureau de Recherches Géologiques et Minières compiled this data from strategic noise maps for roads and motorways, using European indicators Lden and Ln. It was last updated on September 17, 2021.

Use Cases

• Identify zones for noise mitigation measures based on regulatory limit values for Lden and Ln.
• Assess the impact of road and motorway infrastructure on surrounding noise pollution.
• Support land-use planning decisions by mapping areas exceeding the 68 dB(A) Lden and 62 dB(A) Ln thresholds.

Strengths

• Based on specific regulatory thresholds: Lden > 68 or 73 dB(A) and Ln > 62 or 65 dB(A).
• Compiled from official strategic noise map reports for road and motorway infrastructure.
• Uses harmonized European noise indicators (Lden and Ln) for standardized assessment.

Limitations

• Description metadata is limited; actual data quality requires manual inspection after download.
• Last updated 2021-09-17 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

Compilation of type C noise zones from strategic noise map reports for roads (CEEREMA) and motorways (ASF network).

Time Range

Data compiled in April 2018, referencing reports from 2016 and 2017-2022.

Freshness

Last updated 2021-09-17 00:00:00.

Geography

Charente-Maritime department, France.