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5.25-inch floppy disks expected to help run San Francisco trains until 2030

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5.25-inch floppy disks expected to help run San Francisco trains until 2030


The San Francisco Municipal Transportation Agency (SFMTA), which runs the city’s Muni Metro light rail, claims to be the first US agency to adopt floppy disks. But today, the SFMTA is eager to abandon its reliance on 5¼-inch floppy disks—just give it about six more years and a few hundred more million dollars.

Members of the SFMTA recently spoke with the ABC7 Bay Area News and detailed the agency’s use of three 5¼-inch floppy disks every morning. The floppies have been part of Muni Metro’s Automatic Train Control System (ATCS) since its installation in the Market Street subway stop in 1998. The ATCS has multiple components, “including computers onboard the trains that are tied into propulsion and brake systems, central and local servers, and communications infrastructure, like loop cable signal wires,” Michael Roccaforte, an SFMTA spokesperson, told Ars Technica.

The floppy disks are for loading the software running the central servers, Roccaforte said:

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When a train enters the subway, its onboard computer connects to the train control system to run the train in automatic mode, where the trains drive themselves while the operators supervise. When they exit the subway, they disconnect from the ATCS and return to manual operation on the street.

Roccaforte said initial planning for an overhaul of the ATCS, including moving off floppy disks, started in 2018 and was expected to take a decade from initial planning to completion. Because of an 18-month-long COVID-19-related hiatus, completion is expected in 2029 to 2030. SFMTA expects to settle on a contractor by early 2025 and will release a detailed project timeline then.

“Ultimately, our goal is to have a single train control system for the entire rail system,” Jeffrey Tumlin, SFMTA’s director of transportation, told ABC7.

Floppy flaws

“If it ain’t broke don’t fix it,” some say. But while the floppy disk-reliant train control system is currently working, there are challenges to relying on the dated technology, which SFMTA has highlighted for years.

The transportation body says the train control system was built to last for just 20 to 25 years, meaning it surpassed its expected lifetime in 2023. In 2020, the Muni Reliability Working Group, said to be composed of local and national transit experts, recommended replacing the transit control system within five to seven years.

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When asked how “dire” it is to upgrade off of floppy disks, Tumlin told ABC7 that it’s all about risk.

“The system is currently working just fine, but we know that with each increasing year, risk of data degradation on the floppy disks increases and that at some point there will be a catastrophic failure,” Tumlin told ABC7.

Previously, the transportation agency claimed that the ATCS had become harder and more expensive to maintain over time. It has also discussed the challenges it has in finding workers who know how to use the dated system.

“We have to maintain programmers who are experts in the programming languages of the ’90s in order to keep running our current system, so we have a technical debt that stretches back many decades,” Tumlin told San Francisco’s KQED in February 2023.

In 2020, a company spokesperson told the San Francisco Chronicle that the SFMTA’s transportation controller graduation rate at the time was 40 to 50 percent.

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When asked if moving off floppies would result in job losses, Roccaforte told Ars:

With the new train control system, there will still be plenty of work for [current] staff, and they will be trained in the new technology. A key part of our project strategy is to develop in-house skill sets and training for existing staff. In addition, we’ll [need] to hire more skilled positions, such as signaling engineers, to help support the new train control system.



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Iran conflict disrupts flights out of SFO

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Iran conflict disrupts flights out of SFO


SAN FRANCISCO (KRON) — Attacks on Iran by U.S. and Israeli forces have disrupted air travel across the Middle East, leading to thousands of flight cancellations and delays worldwide. The instability has reached the Bay Area, where international flights at San Francisco International Airport have been canceled or grounded. The travel disruptions followed retaliatory strikes […]



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Hundreds Rally in San Francisco Against U.S.-Israel Strikes on Iran | KQED

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Hundreds Rally in San Francisco Against U.S.-Israel Strikes on Iran | KQED


She acknowledged that Iranian Americans hold a range of political views, including some who support U.S. intervention, but said she believes the future of Iran should be determined by its people.

“The Iranian people in Iran can decide the future of their country,” she said. “War, I don’t think, is going to help.”

Speaking to the crowd, Mortazavi challenged what she described as a narrative that Iranians broadly support U.S. and Israeli military action.

“They want you to believe that every Iranian … is cheering on the United States and Israel,” she said. “That is unequivocally false.”

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She urged attendees to continue organizing beyond the rally and announced plans for additional demonstrations.

A demonstrator holds an Iranian flag as protesters gather outside the San Francisco Federal Building during a “Hands Off Iran” rally Feb. 28, 2026, in San Francisco. The demonstration called for an end to U.S. involvement in the strikes on Iran. (Gustavo Hernandez/KQED)

Dina Saadeh, an organizer with the Palestinian Youth Movement, said multiple groups mobilized quickly in response to the strikes.

“I’m angered today,” Saadeh told KQED. “People here don’t want to see our country engaged in more endless war.”

Saadeh described the protest as part of a broader effort to oppose sanctions, military escalation and what she called U.S. imperialism. She said participants were calling on elected officials to redirect public funds toward domestic needs.

“People want money for jobs and education, not for war and occupation,” she said.

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KQED’s María Fernanda Bernal contributed to this story.



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Sam Smith’s San Francisco Residency Charts New Course for the Castro

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Sam Smith’s San Francisco Residency Charts New Course for the Castro


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Sam Smith has kicked off his residency at the Castro Theatre in San Francisco, with the singer’s 20-date stint helping to officially usher in a new era for the historic landmark.

First erected in 1922, the Castro closed in 2024 for a reported $41 million renovation project. But the century-old Spanish-style Baroque theatre is open for business — and music — once again, with its gilded ceiling and ornamental walls restored to its original design, while seating is now reconfigurable for different events, including 650 seats that can be removed to create more standing room space (like for Smith’s concert). More importantly, city officials hope the re-opening of the Castro Theatre will also help revive the predominantly queer neighborhood it sits in, which shares a name with the venerable venue.

“Do you guys realize how special this street is?” Smith asked the sold-out crowd, during night two of their residency last week. “I grew up in a village in the middle of f-ckin’ nowhere,” they shared. “I was the only gay in the village and yes I was very dramatic about it as well,” they added with a laugh.

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“There is nothing like this street and nothing like the Castro and the community here,” Smith said. “I’ll never forget coming here when I was 20 years old, so reopening this theater now is such an honor.”

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Tickets to Smith’s Castro residency quickly sold out when the shows were first announced but you can still find stubs on sites like StubHub, Vivid Seats and SeatGeek. New users can use the promo code THR30 to save $30 on orders of $300 and up at VividSeats.com. SeatGeek customers can use promo code HOLLYWOOD10 to save $10 at SeatGeek.com.

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Smith’s San Francisco stint follows their “To Be Free: New York City,” residency which took place last fall at Brooklyn’s historic Warsaw club. Other artists set to play at the Castro this spring include Father John Misty, José González, Santigold and Lucy Dacus. The Castro will also help celebrate the 50th anniversary of the LGBTQ-themed Frameline Film Festival this June.

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Smith’s residency runs until March 14.

According to tourism officials and local businesses, Smith’s new Castro residency and the reopening of the theatre has already helped to bring in a number of new visitors to the area. Mat Schuster, the executive chef and owner of long-time neighborhood fixture, Canela, says business has been “very busy” in the last few weeks, crediting Smith’s show with bringing out new diners to the Spanish restaurant, which has been on Market Street since 2011. Other local hotspots like wine bar Bar49, the San Francisco outpost of Hi Tops, and the women’s sports bar, Rikki’s (named after Gay Games Federation founder Rikki Streicher), were all packed on a recent evening following Smith’s Castro concert.

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According to San Francisco Tourism, the reopening of The Castro Theatre is poised to deliver “meaningful economic gains” to the surrounding neighborhood, which some stats estimating that the venue will draw more than 200,000 visitors annually.

With the Castro Theatre now open again, local officials are looking ahead to other upcoming celebrations, including a planned reimagining of the Castro and Market Street intersection into The Memorial at Harvey Milk Plaza, honoring the first openly gay elected official in California (and the inspiration for the 2009 Sean Penn film). Milk’s legacy is already enshrined at the San Francisco airport of course, with terminal 1 at SFO renamed as the “Harvey Milk Terminal;” the new memorial is scheduled to be completed by 2028. The annual Castro Street Fair, meantime, a community street celebration founded by Harvey Milk in 1974, will take place on the first weekend of October.

The reopening of the Castro comes amidst a busy few months for San Francisco, which recently saw a number of athletes and celebrities in town for the Super Bowl. Steph Curry’s new speakeasy, The Eighth Rule, was among the hotspots over the big game weekend and the basketball star’s bourbon-forward bar continues to be a hot reservation in the city. Opened in the fall, the bar is tucked away in a nondescript hallway inside the Westin St. Francis hotel in Union Square, offering an intimate and exclusive setting for the Golden State Warriors point guard’s Gentleman’s Cut Bourbon, which can be ordered on its own or as part of a six-course omakase-style cocktail tasting (we loved the clarified coconut milk punch and the truffle-vanilla whiskey sour). Of course, guests can also order cocktails a la carte, choosing from different bourbons and whiskeys, plus a full selection of other spirits.

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Next door to The Eighth Rule is Bourbon Steak San Francisco, the latest outpost of Chef Michael Mina’s award-winning steakhouse. The restaurant marks the celebrity chef’s return to the Westin St. Francis, where he opened his first eponymous restaurant in 2004. In addition to its selection of steaks, seafood and caviar offerings (like Mina’s famous “caviar twinkee”), this Bourbon Steak outpost offers a family-style dining experience for six people, available through advance reservations. This is the only Bourbon Steak location to offer this communal table format.

New this month is the highly-anticipated opening of JouJou, an elevated French brasserie concept from the owners of the two Michelin-starred Lazy Bear. Located in the city’s Design District, JouJou is poised to be the next celebrity hangout, with its ornate dining room and marble-topped counters setting the scene for steak frites and star sightings alike. As chef David Barzelay told the San Francisco Chronicle when asked about the inspiration for JouJou: “It always feels like you’re just in a place where it’s happening.”



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