hi,

I don't foresee doing this project without consent from the Railway. If we do it with their consent, we get into the grey areas of copyright which we're not sure how to tackle.

I'd suggest doing the project with permission from the Railways and then giving the CC-BY-SA license in the Railway name. I think all we need to figure out is whether this can be done. 

warm regards,
Pradeep Mohandas