Proposal as adopted by the Working Party on General Safety Provisions (GRSG) at its 102nd session to add “A” and “AUTO” symbols for automatic systems and to apply ISO alert color coding (degree of danger hierarchy) to symbols 25 and 28 (brake system malfunction and parking brake, respectively).

This proposal is considered to be adopted and are binding upon all Contracting Parties applying Regulation No. 121 as of 15 July 2013.