Ordinary subway trains produce sound intense enough to distress people physically

Evidence

On the afternoon in question, at approximately 4:17, the downtown local screeched into the station, across the tracks from us. Even one train—with its steel wheels mashing steel rail, brakes woefully lacking in grease, ventilators roaring as they struggle to keep the temperature of both motors and passengers in check—hits the ears like an extrusion of New York, in all the city’s unapologetic whaddya, its in-your-face aggression. The level of sound it generates will set babies crying. — George Michelsen Foy, Zero Decibels, 30

Categorization

• corroborated: 2 independent passages support this claim — George Michelsen Foy, Zero Decibels: The Quest for Absolute…, 30
• XREF: connects to: New York subway platform noise routinely exceeds safety thresholds within half an hour — George Michelsen Foy, Zero Decibels: The Quest for Absolute…, 39; Certain low-frequency sounds can resonate with body organs and cause physical harm — George Michelsen Foy, Zero Decibels: The Quest for Absolute…, 45

Broader Connections

• Certain low-frequency sounds can resonate with body organs and cause physical harm #corroborates (0.75) — George Michelsen Foy, Zero Decibels, 45