UIC 522-2:2002-04

The UIC developed an automatic buffing and draw coupler (UIC 69E/Intermat automatic coupler) for the European railways jointly with the OSJD in the 1960s. The migration to the automatic coupler which was to take place in a single brief period given the type of system concerned, has been suspended to date for financial reasons. When more simple financial solutions were sought for an automatic coupler, an automatic draw-only coupler was proposed which: transmits only traction forces and with which side buffers are retained, couples the main brake pipe automatically, includes an integrated mixed coupler so that it can be coupled manually with vehicles equipped with screw couplers in order to allow for gradual migration. The following acceptance conditions have been drawn up for use of automatic draw-only couplers in international traffic. Point 2 specifies the acceptance tests required to ascertain compliance with acceptance conditions.