UK national railway becomes world's first to test quantum navigation

The world-first quantum rail test in Britain could replace GPS and deliver accurate train positioning in tunnetunnelsls and dense networks.

Interesting Engineering
@MsDropbear42 this sounds suspiciously like accelerometers dressed up with the "quantum" keyword. Reading further!

@MsDropbear42

quantum navigation sounds a lot better than "improved accelerometers". An evolutionary improvement in inertial navigation (as opposed to revolutionary improvement imho). I think they would still need to periodically reset accumulated errors with balises or equivalent.

https://www.railwaygazette.com/metro/quantum-train-location-testing-on-the-london-underground/66026.article

https://en.wikipedia.org/wiki/Inertial_navigation_system

Quantum train location testing on the London Underground

UK: Researchers are using a London Underground train to test whether quantum inertial navigation systems could be used to provide accurate location information for condition-based monitoring, train control and signalling applications without needing satellites or lineside equipment. Source: MoniRail This forms part ...

Railway Gazette International