[LEAPSECS] No leapseconds on trains

[Clive D.W. Feather]

Paul J. Ste. Marie said:

>> Hmm. In the UK the working timetable (not the public one) is written to a 

>> precision of half a minute.

> This wasn't the timetable. Its main purpose, as I understood it, was to provide a record of where trains were, or where the dispatchers thought they were, in the event of an accident.


Okay.


> The logged locations weren't stops on the lines. 


Hmm, they may well be logging each track circuit transition (I belive that
SSIs here do that). In which case a second is about the right granularity;
TRs normally have a delayed pick of a couple of seconds for safety reasons,
and the reporting time from trackside module to interlocking runs on a
basic cycle of several hundred milliseconds. So a 1 second error isn't
going to faze anyone.

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Clive D.W. Feather          | If you lie to the compiler,
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