eh I worked around this and other operational technology and industrial control system security testing previously - lots of it isn’t built with security in mind
test wise you’d be amazed at what old controllers end up at surplus places or on eBay.
NO old surplus controllers are being reused in the industry.
The overriding mandate in EVERY train design system is "fail to safe". Trains are unique in that they have a reliably safe fail mode - brake, as fast as you can, so fast that the wheels heat up and weld to the tracks. Another train could come along and hit them, but that's another incident, unrelated to the current danger.
Cars doing that can get rear-ended as a result. Planes would de-elevate rather dramatically. Bicycles would throw their riders off.
The industry (and specifically, the light-rail aka people mover train industry) is so safety-conscious that railroads write additional safety regulations to be added to the FRA rulebook.
IAmBroom|7 months ago
NO old surplus controllers are being reused in the industry.
The overriding mandate in EVERY train design system is "fail to safe". Trains are unique in that they have a reliably safe fail mode - brake, as fast as you can, so fast that the wheels heat up and weld to the tracks. Another train could come along and hit them, but that's another incident, unrelated to the current danger.
Cars doing that can get rear-ended as a result. Planes would de-elevate rather dramatically. Bicycles would throw their riders off.
The industry (and specifically, the light-rail aka people mover train industry) is so safety-conscious that railroads write additional safety regulations to be added to the FRA rulebook.