New Brunswick, NJ Noise Levels
New Brunswick, NJ: what the federal noise map shows
New Brunswick, NJ reads 47.5 dB(A) on BTS's 24-hour average, inside HUD's "Acceptable" noise zone, 65 dB(A) day-night average or below under 24 CFR 51.104, the federal government's own line for building housing with no extra sound attenuation required. Rail traffic drives that number here, not the other two sources. That figure is sampled at one coordinate, the Census Bureau's own internal point for New Brunswick, not a street-by-street survey of the whole place.
New Brunswick'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
The same window and door upgrades that work on road noise also cut broadband rail noise, though very low-frequency freight rumble travels through walls, not just glass.
Where New Brunswick ranks
Among the 3,622 US places in this dataset with any measurable transportation noise, New Brunswick ranks 1,918, loudest first. By population, it ranks 715 of the 12,137 places in this dataset, home to about 57,487 people.
Your street may differ from New Brunswick's reading
For a single house or lot in New Brunswick 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 New Brunswick's figure, see the methodology guide. Since rail traffic is what's driving this reading, the guide to what actually cuts each kind of noise covers the fix that fits.