Nocturnal Noise Level Indicator - Road
This dataset maps night-time noise levels generated by road traffic across France. It presents isophone curves at 5 dB(A) intervals starting from 50 dB(A), based on the Ln (night noise) indicator, which measures average noise levels between 22:00 and 6:00. The mapping is produced at a cartographic scale of 1:10,000 and is intended to be updated every five years. It provides a standardized, nationwide view of nocturnal road noise exposure, useful for environmental monitoring and land-use planning related to noise pollution from transport infrastructure.Indicates noise levels induced by road transport Mapping represents isophone curves plotted in increments of 5dB(A) from 50dB(A) The Ln (Night for Night) is the indicator of the average night noise level (22h-6h). The entry was made for a cartographic restitution scale of 1/10,000th. The cards will be updated every 5 years.
Trust score
How is this computed?Weighted across five axes. Tap a ring for what it measures.
Data access
This entry links to a dataset, file download, or documentation page rather than a self-describing API, so there's no field schema to display.