Guides

• How NoiseLevelCheck Reads the Federal Noise Map — The exact BTS dataset and decode method behind every place's dB(A) reading, and the two honesty caveats that come with it.
• What HUD's Noise Zones Actually Mean — Why the federal government draws a line at 65 dB(A) and another at 75 dB(A), and what falling in each zone changes.
• What Actually Cuts Road, Rail and Aircraft Noise — Why a window upgrade helps with road and rail noise but not aircraft noise, and what does.
• Why New York City Shows Up "Quiet" Here — 70% of places here show no measurable noise, including some of the biggest US cities. Here's why, and what a quiet result actually means.