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Tests suggest Russian satellites can jam GPS on a continental scale
(arstechnica.com)
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this post was submitted on 09 Jun 2026
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Trains don't need gps, do they?
I mean, neither do cars or planes.
Planes don't? That plane flying off course and getting shot down lead to GPS signals being made accessible to the public.
It helps a lot, but planes were navigating the world long before the invention of GPS.
They also used to go off course and get shot down.
Well, you’ve not specified what shoot down incident you’re talking about but I’d argue the fault probably lies with the trigger happy air defenders not IDing their targets.
My guess is he means Korean Air Lines Flight 007, which was caused by a mistake the Pilots made and a trigger happy/incompetent sovjet Airforce.
VFR pilots aren't even allowed to use GPS for primary navigation. Those don't fly bigger airplanes but visual flight is still taught and used to this day
Celestial navigation is still taught. Hard to use in certain weather conditions though.
Wasn't taught when I went to flight school, or in any country AFAIK. Meanwhile VFR are taught to pretty much every single pilot today and they need to fly using them before learning instrument flight, that is all over the world.
https://railwaynews.net/wiki/what-is-positive-train-control-ptc-the-gps-based-safety-mandate
“GPS” would mean GNSS satellite systems like GPS, as well as terrestrial systems like AGPS and base-station-based triangulation. Given that modern train control systems involve transponders alongside the railway line, these can be used as well. Railway lines running through tunnels in particular would rely on non-satellite systems.
Rail lines use multiple redundant navigation and safety systems. GPS is one of them.
GPS is used a lot in logistics for real-time tracking of trains, trucks, wagons and containers. Of course they don’t need GPS to move, but you need it to coordinate transportation. The train needs to be there on time when the ship arrives, the truck needs to be there in time for the train.
If that process doesn’t work it isn’t only costly, the disruptions propagate. As in your train or flight will be delayed, or you’ll be late for work due to traffic.
Source: I worked for a logistics company and was responsible for a bug that led to trucks being backed up for kilometers in several locations, requiring the police.