Noisy
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The world is being quietly rearranged by people who write very long documents.

Federal Register · October 28, 2024
The title they went with Positive Train Control Systems Noisy translates that to

Train safety systems can now be turned off for repairs without stopping trains

What happened
US rail regulators are proposing new rules for when train safety systems can be temporarily disabled. This means railroads can keep trains moving while they fix or upgrade the automated safety technology.
Why it matters
Since 2020, all major US rail lines have used automated safety systems to prevent collisions and derailments. But if these systems needed repair, trains had to stop or slow down significantly. This change means railroads can now keep trains running at normal speeds during temporary outages, which should reduce delays and make it easier to maintain the safety systems.
The signal
Watch for how often railroads use these new temporary disablement rules and whether it leads to a measurable increase in system uptime or a decrease in service disruptions.
If you insist
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