[OSM-talk-be] Railway data accuracy , age and origin

[Sander Deryckere]

Most of the railway data comes from survey, aerial images and knowledge (no
imports, apart from Urbis, Brussels).

The lines are usually mapped to the pair of rails (even showing the
switches in most cases), and many lines have extra details s.a. gauge,
voltage or maxspeed. But those are not rendered. Mapnik rendering does
differ between major lines and service lines.

Remeber that an active OSM mapper is actually a train driver:
http://osm.be/nl/content/mapper-van-de-maand-ben-laenen

2015-01-07 17:15 GMT+01:00 Glenn Plas <glenn at byte-consult.be>:

> Hi,
>
> Is there anybody out there who knows some background information on
> where the railway data comes from in OSM ?  The origin and accuracy in
> particular?
>
> More specifically the train railway (not tram).  I'm working on a side
> project to determine how accurate this data is today and how it compairs
> to what the railway services calls their : "PTCAR data"
>
> How convincing can I become to stimulate using OSM as a background
> instead of google maps (as it is right now in the variety of mapthings
> they use @ NMBS )
>
> They overlay a KML of this data on google maps....  My usually
> information channel doesn't know the answer on this question.
>
> Thanks for any background information in advance,
>
> Glenn
>
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