[LEAPSECS] No leapseconds on trains

[Ian Batten]

On 20 Nov 2011, at 1138, Poul-Henning Kamp wrote:


> In message <4528DB27-CE6E-4D72-84B3-72D3EF2107D2 at batten.eu.org>, Ian Batten wri

> tes:

> 

>> Anyway, the average freight train in the USA is 6500 feet long (ie

>> substantially over a mile) and travels at an average of around

>> 20mph, or at most 30mph.

> 

> I would expect the relevant technical case to be high-speed passenger

> trains, travelling at up to 90m/s and where the entire train can

> pass over a point on the track in as little as two and a half second.


Which isn't a use-case for passing times being measured manually at manual signal boxes and manually written onto paper sheets for manual analysis, of course.

ian