Railway Noise Impact Sectors in Loire-Atlantique, Updated 2020

2020 noise classification of land transport infrastructure in the French department of Loire-Atlantique, focusing on railways. The dataset likely contains geospatial sectors defined by noise levels and traffic estimates, developed by a specialized acoustics design bureau using data from infrastructure managers. The classification is based on traffic estimates projected over 20 years.

Use Cases

• Mapping noise exposure zones for urban planning based on the defined sector widths.
• Assessing compliance with environmental noise regulations based on the five acoustic categories.
• Estimating required facade insulation for buildings based on the noise levels associated with each category.
• Analyzing long-term noise impact projections based on the 20-year traffic estimates.

Strengths

• Classification is based on technical standards and data from official infrastructure managers.
• Traffic estimates are projected over a 20-year horizon.
• The classification was updated in 2020, replacing previous orders from 1999 to 2018.

Limitations

• Description metadata is limited; actual data quality requires manual inspection after download.
• The layer accuracy has known limits, including potential discrepancies with IGN repositories and a few meters of error due to buffer calculation methodology.
• Column-level documentation is absent; field semantics must be inferred after download.

Provenance

Source

BUREAU DE RECHERCHES GÉOLOGIQUES ET MINIÈRES, with partner organisation DDTM of Loire-Atlantique.

Collection Method

Developed by a design office specializing in acoustics using data from infrastructure managers (SNCF Réseau, ASF, COFIROUTE, DIRO, Department, EPCI, Communes). Calculation based on traffic, share of heavy goods vehicles, pavement surface, and speed.

Time Range

Classification updated in 2020.

Freshness

Last updated 2021-02-02 00:00:00; freshness should be verified.

Geography

Department of Loire-Atlantique, France.