Nocturnal Noise Level Indicator - Road
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?Composite of 5 axes from our methodology (proof-based officialness, live verification, metadata completeness, license clarity, agent readiness).
- Officialnessweight 25%50/100
Not public-sector → neutral score; not subject to the proof checker.
- Availabilityweight 25%100/100
Latest verification succeeded.
- Metadata completenessweight 20%50/100
3 of 6 recommended metadata fields populated.
- License clarityweight 15%50/100
License info not yet tracked for APIs (datasets only).
- Agent readinessweight 15%10/100
Topic tags assigned
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.