Paragraph 11 of the (European) Charter on Rail Passenger Services adopted on 22 October 2002 reads :
"Commun practice regarding assistance to rail passengers with reduced mobility will be applied, as reflected in standards agreed by the European railways (a summary of the contents of these standards is appended). This will cover information on assistance in stations, assistance and facilities to board/disembark from trains and on-board information.
Information on services available for persons with reduced mobility on the main international routes is available at points of sale and on the appropriate information channels."
Railpassenger.info This international website lets you access information about travelling by train in Europe, including
facilities for passengers needing assistance.
UK Describe-online
Provides on-line guidance information about railway stations,
underground stations, public areas, etc, from a blind person's
perspective. The website is very accessible, as it is all text.