Post for magicmirror.builders

since the api of the national railway does not offer so detailed information about all vehicles (including delays on busses and underground lines) i would like to implement a departure monitor.
The company "Mentz Datenverarbeitung" hosts the "EFA" Api for a lot of transportation companies.
This blog post discusses it a bit:
http://www.eg-blog.de/?p=822

Requests to this service can be recognized by the "XSLT_DM_REQUEST" parameter or the words "EFA"

This System is also available in the UK
http://www.travelinemidlands.co.uk/wmtis/XSLT_DM_REQUEST?language=en