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

[Glenn Plas]

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