All BART trains were stopped due to ‘computer networking problem’

kqed.org

206 points by ksajadi 5 days ago


scarmig - 5 days ago

I don't know the last time the entire BART system got shut down. There was a loud explosion earlier this morning, which may or may not be related, but there aren't any power outages.

No information as to the actual cause right now. Easy to speculate that it's a cyberattack, but I'm going to go for the free square and wildly guess it is a DNS issue.

Best wishes and godspeed to the folks who are working on fixing the issue, whatever it is.

dang - 5 days ago

We changed the URL from https://www.bart.gov/ to an article that provides more information about what happened. See also:

https://www.sfchronicle.com/bayarea/article/bart-shut-down-t... (https://archive.ph/LnvJ1)

https://sfstandard.com/2025/05/09/bart-service-shuts-down-co...

https://www.nytimes.com/2025/05/09/us/bart-train-shutdown.ht... (https://web.archive.org/web/20250509152319/https://www.nytim...)

https://abc7news.com/post/systemwide-bart-shutdown-due-train...

fhkatari - 5 days ago

I used to live in Oakland, and am really sad to see continued failures of BART. They had started significant expansions right before the pandemic, allowing a long (but no traffic) ride possible from Oakland to San Jose. A key challenge for BART is that they depend a lot more on ticket sales than subsidies, and as a result, have been hit much harder with lower ridership.

kiroguku - 5 days ago

Postmortem thread posted: https://x.com/SFBART/status/1920945151419003225

>The root cause of the disruption was related to network devices having intermittent connectivity. Staff in the Operations Control Center lacked the visibility of the track circuits and the train positions necessary for safe operations. Visibility of this system in the Operations Control Center is required to run service.

> BART’s Network Engineering team identified and isolated a redundant sector of the network that was causing intermittent visibility and disconnected it. This allowed service to begin.

satiated_grue - 5 days ago

Not quite but nearly totally unrelated, but I love that Debian ships a package of a PDP-8 PAL-like cross-assembler written at BART:

https://tracker.debian.org/pkg/palbart

http://www.pdp8online.com/ftp/software/palbart/

ashayh - 5 days ago

"Poorer" countries with a per-capita GDP that's 1/5th of Bay Area have exceptional public transport.

How about fix the country public transport first instead of spending 2 Trillion on BS AI?

neilv - 5 days ago

> Due to a computer networking problem BART service is suspended system wide until further notice. Seek alternate means of transportation.

That's worth a screenshot.

Any idea whether the political and technical will is there, to post-mortem this, and make the system more robust and resilient?

teleforce - 4 days ago

>“Once the crews isolated that exact section that had the devices that were not properly communicating to each other, they were able to just simply disconnect them,” she told KQED. “That is what allowed us to finally get service back up and running.”

Should it not be "they were able to just simply reconnect them"?

Surprise to see no exact problem been given in the article and comments section. Curious to see is it a legit computer networking problem, and if yes what they actually were? Could they install a proper fail over connection to prevent the outage in the first place?

a_t48 - 5 days ago

Once the initial shock of “how the hell do I get to work” wore off, it was nice taking the ferry and F to SOMA. Took an extra 20 minutes, but better than the time it would have taken waiting in bridge traffic.

CoffeeOnWrite - 5 days ago

I’m worried about BART. The new gate tap scanners work so poorly, somebody really screwed those up, and they haven’t publicly explained what went wrong. I don’t understand why the media doesn’t cover this apparent bad screw up. There were a number of articles on the selection of the design and the planned rollout and the demonstrated susceptibility to ongoing fare evasion, but silence on the adverse impact on paying passengers.

Every day the last week at my station there are piles of commuters held up by the semi-broken scanners. Kudos to the front line staff down there apologizing. I am not holding my breath it’ll be fixed anytime soon.

AStonesThrow - 4 days ago

It seems that many BART supporters are suffering from a fatal fallacy which I also believed until recently.

What is the purpose of public transit? Do you believe that public transit is designed so that poor people can commute to jobs?

Wrong. Public transit is designed so that people can go shopping. Buses and trains move people around to shopping centers and stores and malls.

It is only by accident that poor people can commute to some jobs with public transit. There are far, far more jobs that are more-or-less unreachable by bus or train, and poor people end up walking, cycling, or moving closer to those jobs.

When I was a young child, Grandma didn't drive, and so our weekends were consumed by walking around the neighborhood, shopping and eating in restaurants. We'd hang out at the 7-Eleven playing Centipede, Missile Command, and Asteroids. We'd pick up some sodas and Cracked magazine and go home.

Then later in life, we started going to malls. None of the malls were walking-distance from Grandma's house, so we rode the bus. And I fell in love with public transit; we'd ride the bus to any one of 3-4 malls nearby, walk around to our heart's content, and ride the bus back home carrying our spoils for the day. It was always a treat to do this.

What I definitely noticed was that a lot of poor people rode the bus. What I didn't realize is that mostly, they didn't have anywhere else to go. It wasn't a matter of commuting to their jobs, but just hanging out for the day.

Here in Phoenix, most bus stations are in shopping malls, or they become de facto shopping centers, and the light rail corridor is basically a commerce incubator by the way stores and shopping centers are popping up now that the track is permanently laid down.

On the weekends it may be common to see working-class Hispanic moms take their children to church on the free buses, but the free buses are intended to get tourists and residents into the shopping areas and/or connect them to the full-fare routes so that they can really do some hardcore "shop 'til you drop" activity.

In fact, the public transit sectors that are designed for commuting are the Express buses, which have a higher base fare and serve 9-5 white-collar office workers. It's transparently upper-crust. None of those Express routes can possibly help poor people get to poor-people jobs. Express buses get people into the city center so they don't need cars there: attorneys, civil servants, accountants, clerks. That's the Express system only. The rest of transit: shopping, shopping and more shopping.

throwaway81523 - 5 days ago

Some system wouldn't power up this morning. System is back in service now, with major delays in all directions.

https://www.sfgate.com/bayarea/article/no-bart-trains-runnin...

albert_e - 4 days ago

Request: Make titles more accessible to global audience.

BART doesn't automatically mean anything unless you are familiar with the region.

I lived 7 years in the US and still took a while (even after opening the linked article -- given the website was a local media outlet, there were no immediate clues in the article which country/state/city it is referring to)

nashashmi - 4 days ago

NYC MTA has an old mechanical system in place to prevent collisions. And they also have a new system in place to keep things safe. And the directors insisted both run side by side. This delayed so many projects for so many years. It took ten years to put in place train time estimation.

I guess today those same people feel a level of validation on what they insisted.

talldatethrow - 5 days ago

Most people I know wouldn't take Bart if it was free. Dirty, noisy, and unsafe. I can't imagine anything can be done to make Americans take trains at scale unless atleast the unsafe part is handled, and then the dirty part atleast.

great_wubwub - 4 days ago

137 comments as I write this and not a single one says "spanning tree loop".

jbverschoor - 5 days ago

Due to human failure when operating computer systems*

quickthrowman - 5 days ago

Right now I am a subcontractor on a project to replace the Liebert unit in the server room that runs my metro area’s transit system, my worst nightmare is my tech calling and telling me the servers are down, glad this isn’t me!!

noitpmeder - 5 days ago

Their HQ lost power yesterday, maybe related?

quotemstr - 5 days ago

Did they finally run out of old new stock 5.25-inch floppy disks?

whalesalad - 5 days ago

it's always DNS

- 5 days ago
[deleted]
- 5 days ago
[deleted]
ujkhsjkdhf234 - 5 days ago

I took a trip to Europe last month and watching America fail at all manners of transportation is embarrassing

edgineer - 5 days ago

[flagged]

notpushkin - 5 days ago

Now this could make a great anime episode.

[0]: https://news.ycombinator.com/item?id=43806281