How many dB is a subway train?
How many dB is a subway train? 90 dB: Subway train. 100 dB: Factory machinery. 110 dB: Car horn. 120 dB: Ambulance siren.
How loud is the sun on Earth?
After some calculations, he explained that the Sun would theoretically blare out a noise of around 100 decibels, almost as loud as standing next to a speaker at a rock concert or busy nightclub. That's pretty remarkable when you consider the Sun is 150 million kilometers (over 93,000,000 miles) away from us.
Are subway trains loud?
But what was measured exceeds that limit: The samples show the average noise levels on all subway platforms and on all subway rides (inside subway trains) is between 72.5 and 76.5 dB and between 74.1 and 75.8 dB, respectively.
What would 170 decibels do to a human?
Sounds above 150 dB have the potential of causing life-threatening issues. Sounds between 170-200 dB are so intense that they can cause lethal issues like pulmonary embolisms, pulmonary contusions, or even burst lungs.
Why do trains honk 4 times?
Anyway, don't blame the engineer: They're required to blow that horn. The regulation in question is called the Final Rule on the Use of Locomotive Horns—a name that strongly implies they've had just about enough of your bitching—and it requires four blasts 15 to 20 seconds before every crossing.
What is the loudest subway station in NYC?
South Ferry is the loudest station in an already ear-crushing subway system, with trains rumbling out at 111 decibels — as loud as a rock concert — according to a Post survey. Doctors say listening to such volume for one minute could result in permanent hearing damage.