Why is BART so loud?

Because the inner radius is smaller, there is less distance to travel, which can cause a slippage between the wheels and track, which is noisy. How do you avoid getting fined for parking at a Bay Area Rapid Transit (BART) station overnight in San Francisco?



People Also Ask

Why are BART trains so loud? Screeeeech, nothing sounds quite so piercing as a BART train zipping through the Transbay Tube. A few years ago, a Chronicle study found that the loudest stretches of track topped out at 100 decibels; 85 decibels is considered the threshold for potential hearing damage.

MORE DETAILS

But because of the design, one of the wheels ends up getting dragged against the rail on turns, which causes that high-pitched squeal. “So one wheel has to be sliding while the other is rolling,” Kolesar says.

MORE DETAILS

Testing has shown a drop of as many as 20 decibels in sound intensity. One way to think about the difference is if the decibel level of riding on a BART train with the old wheel profile and rail sounded like standing near a lawnmower the new system is more like being next to a dishwasher.

MORE DETAILS

Noise. Many BART passengers have noted that the system is noisy, with a 2010 survey by the San Francisco Chronicle measuring up to 100 decibels (comparable to the noise level of a jackhammer) in the Transbay Tube between San Francisco and Oakland, and still more than 90 decibels in 23 other locations.

MORE DETAILS

BART actually has a big machine that grinds down the bumps on corrugated track, eliminating some of the noise. This explains why sometimes a portion of the BART system makes loud uuunnnhhh sounds one day and doesn't make a peep the next. You aren't crazy -- they just smoothed out the track at night.

MORE DETAILS

“People say BART cars are loud, but it's all relative,” Kolesar says. BART averages 35 mph, which is much faster than trains in most cities. New York's subway goes about half as fast on average — 17 mph. And as anyone who has taken the A train can tell you, New York subway cars are not known to be silent types.

MORE DETAILS

According to Luis Gomez-Agustina, who teaches an acoustic course at London Southbank University, “the fact that most of the [London] Underground stations' surface materials are acoustically hard – [they are] highly reflective, they do not absorb sound – facilitates the noise generated to stay within the space for ...

MORE DETAILS

BART has 8 DMU train cars which each have a seating capacity of 104. 70 mph maximum; 35 mph average, including 20-second station stops. For BART to Antioch DMU trains, the maximum speed is 75 mph; 60 mph average.

MORE DETAILS

Why do trains honk so loud at night? Train horns sound at the same volume whenever they are sounded. They often have minimum volume requirements, to ensure they can be heard far enough away for workers in a working environment to seek safety.

MORE DETAILS

In the promotional video, the AI tool is asked “What new discoveries from the James Webb Space Telescope [JWST] can I tell my 9 year old about?” In its response, Bard answers that JWST took the “very first pictures” of an exoplanet outside our solar system.

MORE DETAILS

When it rains, BART also alters its computer programs to slow the acceleration of trains in certain areas to prevent them from spinning their wheels. But those delays, he said, are typically less than 30 seconds. It's nothing that would be noticed by passengers, he said.

MORE DETAILS

Berryessa/North San Jose to Embarcadero Station Taking BART, he noted, is also faster than driving the highly trafficked highways into San Francisco. “Being on BART makes me feel relieved. It's way more stressful driving,” he said.

MORE DETAILS

Taking the train has long been less expensive than driving when considering bridge tolls and parking — and now it's an even more affordable option when you consider most Bay Area gas stations are charging more than $6 a gallon.

MORE DETAILS

BART SeRvICe OveRvIew BART provides service to 48 stations in the San Francisco Bay Area. Hours of operation are generally from 4 am to midnight on weekdays, 6 am to midnight on Saturdays and 8 am to midnight on Sundays and major holidays.

MORE DETAILS

Safety is BART's top priority. To help keep passengers and our employees safe, BART has more than 4,000 working cameras throughout our system and we are working very hard to increase both sworn officers and ambassador presence.

MORE DETAILS

Yes, but be watchful and mindful of your luggage. If someone seems sketchy or looks mentally unstable, then get up and move to another car.

MORE DETAILS

BART agency is on par with similar agencies. In Philadelphia its lower 66-percent, and in Boston higher marks 73-percent. But when it comes to train cleanliness, BART isn't doing as well. Just 62-percent of riders give BART a satisfactory rating.

MORE DETAILS