Re:A new way of keeping trains apart uses magnetic signals i...
by AnimalMuppet on Saturday October 01, 2022 @03:56PM
(#33049477)
It might be worse than that. Rail wears, so the signature probably changes with time, even if nobody moves the rail.
Then, in the US, they sometimes use "rail grinders" - specialized trains that literally grind the surface of the rail, in order to remove things like spalling that come from heavy use. That probably changes the magnetic signature, too, a lot faster than regular wear does.
That's not insoluble - re-map after you grind. But it does complicate things somewhat.
Then, in the US, they sometimes use "rail grinders" - specialized trains that literally grind the surface of the rail, in order to remove things like spalling that come from heavy use. That probably changes the magnetic signature, too, a lot faster than regular wear does.
That's not insoluble - re-map after you grind. But it does complicate things somewhat.