38. Upon the request of WP.29 at its March 2010 session (ECE/TRANS/WP.29/1083, para. 27), GRB noted the guidelines on establishing requirements for high-priority signals (GRB-52-01). As no Regulation currently under the responsibility of GRB was referring to warning signals or control systems, it was a general opinion that GRB was not concerned by the guidelines. Nevertheless, GRB agreed to review, at its next session in February 2011, the proposed text on auditory warnings (GRB-52-01, page 10).