How fast does a BART train accelerate?

Cars have a starting acceleration of 3.0 mph/s or 4.8 km/(h·s) and are capable of holding that acceleration up to 31 mph (50 km/h). Residual acceleration at 80 mph (130 km/h) is 0.78 mph/s or 1.26 km/(h·s). Braking rates range from 0.45 mph/s or 0.72 km/(h·s) up to 3.0 mph/s or 4.8 km/(h·s) (full service rate).



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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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The train is run in automatic mode, so they start and stop by themselves.

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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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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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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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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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Q9: Will the new cars be faster? A: No. The new cars have a maximum speed of 80 miles per hour. To go faster than that, changes would need to be made, not only to the rail car propulsion systems, but also to other BART infrastructure.

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The majority of the old cars will be recycled. The Fleet Disposition Team will manage the process, including selecting which parts should be harvested from retired vehicles and choosing which cars with the highest failure rates get retired first.

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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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There have been no accidents attributed to brake failure. The following incidents are known to have occurred on the BART system: In 1972, shortly after the system opened, a test train carrying no passengers failed to stop at the end of the line at Fremont and ran into the parking lot. There were several injuries.

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Earthquake Safety Program The Transbay Tube is BART's most critical asset. Although the tube is structurally sound, in a very large and very rare earthquake, the outer shell and concrete liner are predicted to crack.

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24 presentation (PDF) prepared for the board that running shorter trains will make the system safer by making it easier for police and non-uniformed personnel to patrol trains. Having denser passenger loads could also discourage “anti-social behavior,” BART says, and make it easier to keep trains clean.

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Average weekday ridership in October was down slightly to 171k, consistent with expected seasonal variation. Weekends saw a boost with Fleet Week and other special events. Saturday ridership, at 100,700 average exits, was 62% of pre-COVID expectations, and Sundays, at 70,900 average exits, was 63%.

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