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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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San Francisco, CA

Giants scratch Rafael Devers from lineup with tight hamstring

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Giants scratch Rafael Devers from lineup with tight hamstring


Friday, February 27, 2026 9:48PM

SCOTTSDALE, Ariz. — The San Francisco Giants scratched slugger Rafael Devers from the starting lineup because of a tight hamstring, keeping him out of a spring training game against the Los Angeles Dodgers on Friday.

The three-time All-Star and 2018 World Series champion is starting his first full season with the Giants after they acquired him in a trade with the Boston Red Sox last year.

Devers hit 35 home runs and had 109 RBIs last season, playing 90 games with San Francisco and 73 in Boston. He signed a $313.5 million, 10-year contract in 2023 with the Red Sox.

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He was 20 when he made his major league debut in Boston nine years ago, and he helped them win the World Series the following year.

Devers, who has 235 career homers and 747 RBIs, led Boston in RBIs for five straight seasons and has finished in the top 20 in voting for AL MVP five times.

Copyright © 2026 ESPN Internet Ventures. All rights reserved.



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San Francisco court clerks strike for better staffing, training

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San Francisco court clerks strike for better staffing, training


The people cheering and banging drums on the front steps of San Francisco’s Hall of Justice are usually quietly keeping the calendars and paperwork on track for the city’s courts.

Those court clerks are now hitting the picket lines, citing the need for better staffing and more training. It’s the second time the group has gone on strike since 2024, and this strike may last a lot longer than the last one.

Defense attorneys, prosecutors and judges agree that court clerks are the engines that keep the justice system running. Without them, it all grinds to a slow crawl.

“You all run this ship like the Navy,” District 9 Supervisor Jackie Fielder said to a group of city clerks.

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The strike is essentially a continuation of an averted strike that occurred in October 2025.

“We’re not asking for private jets or unicorns,” Superior Court clerk employee Ben Thompson said. “We’re just asking for effective tools with which we can do our job and training and just more of us.”

Thompson said the training is needed to bring current employees up to speed on occasional changes in laws.

Another big issue is staffing, something that clerks said has been an ongoing issue since October 2024, the last time they went on a one-day strike.

Court management issued their latest statement on Wednesday, in which the court’s executive officer, Brandon Riley, said they have been at an impasse with the union since December.

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The statement also said Riley and his team has been negotiating with the union in good faith. He pointed out the tentative agreement the union came to with the courts in October 2025, but it fell apart when union members rejected it.

California’s superior courts are all funded by the state. In 2024, Sacramento cut back on court money by $97 million statewide due to overall budget concerns.

While there have been efforts to backfill those funds, they’ve never been fully restored.

Inside court on Thursday, the clerk’s office was closed, leaving the public with lots of unanswered questions. Attorneys and bailiffs described a slightly chaotic day in court.

Arraignments were all funneled to one courtroom and most other court procedures were funneled to another one. Most of those procedures were quickly continued.

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At the civil courthouse, while workers rallied outside, a date-stamping machine was set up inside so people could stamp their own documents and place them in locked bins.

Notices were also posted at the family law clinic and small claims courts, noting limited available services while the strike is in progress.

According to a union spokesperson, there has been no date set for negotiations to resume, meaning the courthouse logjams could stretch for days, weeks or more.



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Which San Francisco Giants Prospects Are Real Depth vs. Marketing Names

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Which San Francisco Giants Prospects Are Real Depth vs. Marketing Names


The San Francisco Giants are likely to break camp with one of their top prospects on the 26-man roster. But they’re all getting plenty of work in camp.

The thing is, just because a prospect doesn’t make a 26-man opening day roster doesn’t mean they can’t help a Major League team at some point in the season. Others, for now, are working on developing talent.

In this exercise, five prospects that are part of Major League camp were selected to determine if they’re real depth this season or if they’re marketing names — for now. Marketing names can become real depth before one knows it, such as the first Giants prospect listed.

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Bryce Eldridge: Real Depth

San Francisco Giants Bryce Eldridge | Joe Camporeale-Imagn Images
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Eldridge has nothing left to prove at the minor league level after he was selected in the first round in the 2023 MLB draft. Back then, he was the classic example of a marketing name, one that creates buzz in the organization and with fans.

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But, after more than two years of development and a taste of the Majors, he’s real depth. He’s expected to make the opening day roster and share time at first base and designated hitter with Rafael Devers, one of the game’s most established sluggers.

On Wednesday, he hit his first spring training home run, one of three in the 13-12 loss to the Milwaukee Brewers.

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Blake Tidwell: Real Depth

Tennessee pitcher Blake Tidwell | Brianna Paciorka/News Sentinel / USA TODAY NETWORK

Tidwell was acquired from the New York Mets in July in the Tyler Rogers trade. He only pitched in four games for the Mets, so he still has prospect status. But that MLB service time, combined with his early impressions in camp, make him real depth for a team that only has one or two spots available on the pitching staff.

Tidwell may not make the team out of camp for opening day. But he’s one of those prospects that could make his way to San Francisco during the season due to injury or underperformance. It’s an example of using the time in spring training wisely and paving the way for a future promotion.

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Will Bednar: Real Depth

Mississippi St. Bulldogs pitcher Will Bednar. | Steven Branscombe-Imagn Images
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The Giants have been waiting for their first-round pick in the 2021 MLB draft to pay off, and this might be the year that Will Bednar finally makes the jump to the Majors. He’s in Major League camp and he’s been converted into a reliever in the past couple of seasons.

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He went 2-3 with a 5.68 ERA in 38 games, his full season as a reliever. But he’s impressed the new coaching staff during camp and there’s enough buzz around him to consider him a potential call-up during the season. He’s in his fifth professional season so the Rule 5 draft is a consideration this coming offseason.

Parks Harber: Marketing Name

For now, the young third baseman is going to create a lot of buzz in the farm system in 2026, but he isn’t a threat to anyone’s job yet. Picked up in the Camilo Doval trade, he only has 102 minor league games under his belt after he was signed as an undrafted free agent by the New York Yankees. He got his first spring training hit on Wednesday. His career slash of .312/.413/.528 is encouraging but he hasn’t played higher than High-A Eugene.

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Bo Davidson: Marketing Name

San Francisco Giants left fielder Bo Davidson. | Rick Scuteri-Imagn Images
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The Giants signed Davidson as an undrafted free agent and he’s starting to generate real buzz in spring training as a non-roster invitee. He’s not quite real depth yet because he has yet to play above Double-A Richmond. But the way he’s playing in the spring he should be at Sacramento sometime this season, which puts him in the position to be real depth.

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He’s hit well at every stop, but he showed off more power than ever last season. He hit a career-best 18 home runs and 70 RBI as he slashed .281/.376/.468. He played 42 games at Richmond last season.




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