[Talk-GB] Rail maxspeeds being converted

[Andy Townsend]

On 05/09/15 09:18, Dave F. wrote:
> Hi
>
> A user has been converting the maxspeed tag of railway line from mph 
> to kph:
>
> https://www.openstreetmap.org/way/278060675/history#map=17/51.42363/-2.72120 
>
>
> It appears to be a straight conversion ie 100mph = 161. Which seems a 
> bit silly. I'm sure the limit wouldn't be exactly 161.
>
> I thought that mph was valid as long as it was labelled as such.
>
> Are the signs next to the rails still in mph?
>

All the ones I've seen in Notts and Derbys still are.  I can't comment 
on further afield, although I do vaguely remember seeing something on 
the news a couple of months ago saying that the train management system 
on the ECML was being changed to something* that would register in-cab 
speeds in km/h.

> His edits appear to be country wide.
> https://www.openstreetmap.org/way/308866549/history
>
> I've sent him a message asking why he's doing it.
>



FWIW I did ask a previous mph -> km/h changer the same question:

http://www.openstreetmap.org/changeset/30977485

Cheers,

Andy (SomeoneElse)


* which might be 
https://en.wikipedia.org/wiki/European_Rail_Traffic_Management_System or 
something else - not sure.