Clemmons, NC Noise Levels
Clemmons, NC: what the federal noise map shows
Clemmons, NC's 70-79.9 dB(A) band spans one of HUD's zone boundaries, so the honest answer is a range: somewhere between "Normally Unacceptable" (65-75 dB(A)) and "Unacceptable" (above 75 dB(A)), not one clean verdict. Road traffic drives that number here, not the other two sources. This describes Clemmons as a whole, not a specific block, the underlying BTS map resolves to about 38 meters per pixel, sampled at the town's own center point.
Clemmons's noise, by source
Each of the three transportation modes gets its own model from BTS; the combined figure above is what they add up to.
What this means for a house here
That also clears FHWA's own 66 dB(A) impact threshold for residential land use (23 CFR 772, Table 1), the level highway agencies use to decide whether a new road needs a sound wall. Upgraded windows, door seals and STC-rated glazing meaningfully cut broadband, near-continuous road noise.
Where Clemmons ranks
Among the 3,622 US places in this dataset with any measurable transportation noise, Clemmons ranks 26, loudest first. About 22,471 people live there, making it the 1,756th largest place in this dataset.
Your street may differ from Clemmons's reading
For a single house or lot in Clemmons rather than the town-wide figure above, BTS's own map is the same free source, queried directly.
More on how this number was built
For exactly which federal dataset feeds Clemmons's figure, see the methodology guide. Since road traffic is what's driving this reading, the guide to what actually cuts each kind of noise covers the fix that fits.