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

arstechnica.com 5.25-inch floppy disks expected to help run San Francisco trains until 2030
"We have a technical debt that stretches back many decades."

I'm kind of shocked that they built the system in '98 and decided to use 5.25 floppies instead of the 3.5 ones.