Reply to post: Very exciting for the railways

Smartphone SatNavs to get centimetre-perfect GNSS receivers in 2018


Very exciting for the railways

Funky modern signalling systems that actually know where the train is have issues with not knowing which of several parallel lines a train is on, purely from GPS, so there is a need to use Balises on the track for location. If this could be made reliable enough then in 40 years time when it clears all the committees that will need to discuss it, it could be very useful.

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