This European Standard was approved by CEN on 3 November 2003 and includes Amendment 1 approved by CEN on 24 February 2009 and Amendment 2 approved by CEN on 24 January 2011. Supersedes EN 13979-1:2003+A1:2009. The European Standard EN 13979-1:2003+А2:2011 has the status of a Bulgarian Standard. 54 р. The aim of this European Standard is to define the requirements that a monobloc wheel of a freight of passenger railway vehicle non-powered axle shall meet in order to be able to be used on a European network.