This is all it takes to stop a train (feat. Rachel Swan)

Forget the runaway train thrillingly shot in Buster Keaton’s 1926 film “The General,” and never mind the charging locomotive rescued by actors Denzel Washington and Chris Pine in the 2010 film “Unstoppable,” as there’s a far more frequent (and far less heart-pounding) railcar drama happening across California’s Bay Area: The repeated breakdown of the Bay Area Rapid Transit (BART) system, all because of a few networking errors.

Opened in 1972, BART today carries about 175,000 people every weekday on five separate lines to 50 different stations placed across dozens of cities in the Bay Area, including San Francisco, Oakland, Berkeley, Daly City, Fremont, Richmond, and more. Its tracks and railcars travel both above ground and below, and it is one of the only public transit systems in the US that goes underwater—traveling through what is called the TransBay tube. It is likely the region’s largest public project, spanning 131 miles of track, with a fleet of more than 700 cars, proving vital to workers and residents everywhere, and on May 9, 2025, it all came grinding to a halt, due to what BART officials called a “computer networking problem.”

At the Glen Park station in San Francisco, would-be travelers found yellow caution tape at the entry gates. At the El Cerrito Plaza station, BART staff and police informed visitors that the system was down. And at the Rockridge station in Oakland, a reporter for The San Francisco Chronicle witnessed a small group of people sprinting up the stairs to try and catch a train that never came.

It was the kind of meltdown for public infrastructure that puts an entire system in peril.

And it happened again just months later.

In September, a network crash brought BART to a halt, repeating almost the exact same frustrations and delays for travelers left without transportation to work.

That’s the end of it, right? Wrong. In February 2026, another computer failure caused another outage.

So, in one of the wealthiest regions in America, the subway doesn’t always run, its network is prone to crash, and any money for technology often goes elsewhere. 

Today, on the Lock and Code podcast with host David Ruiz, we speak with San Francisco Chronicle transportation report Rachel Swan about what the BART outages revealed about the state of the system’s aging technology, why public infrastructure so often struggles to modernize, and what exactly went wrong in the three prior outages.

“One piece of equipment—and again, this is old equipment—one piece breaks down and they completely lose visibility, so they don’t know where any of the trains are.”

Tune in today.

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Show notes and credits:

Intro Music: “Spellbound” by Kevin MacLeod (incompetech.com)

Licensed under Creative Commons: By Attribution 4.0 License

http://creativecommons.org/licenses/by/4.0/

Outro Music: “Good God” by Wowa (unminus.com)

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