Why does BART slow down in the rain?

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.



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Constructed in 57 sections, and reposing on the bay floor as deep as 135 feet beneath the surface, the remarkable $180 million structure took six years of toil and seismic studies to design, and less than three years to contract.

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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.

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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.

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Trains are cleaned after every single trip they take, multiple times a day; at the end of each line, crews hop aboard to remove litter and messes.

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In celebration of BART's upcoming 50th anniversary on September 11, BART is offering a 50% discount for the entire month of September 2022. The reduced fare will be automatically deducted when using Clipper at the fare gates.

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Like most trains, BART wheels are tied together with rigid axels and no differentials. This means the wheels always rotate at the same speed, even around corners. 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.

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The BART Board of Directors passed the proof of payment requirement on October 26, 2017, to deter fare evasion. The new ordinance took effect January 1, 2018. Any person inside the paid area of BART must be prepared to show a magnetic stripe ticket or Clipper card with valid fare.

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Permits are required for (electric only) motorized scooters/two-wheeled vehicles. Smoking or vaping is prohibited in stations or on trains. Gasoline, flammable or volatile solvents, acids, or hazardous or explosive materials are not allowed in stations or on trains.

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