44. Upon the request of the World Forum WP.29, (ECE/TRANS/WP.29/1085, para. 19 and ECE/TRANS/WP.29/1097, para. 14), GRSG considered a proposal on harmonized requirements for high-priority warning signals (GRSG-103-15) and on design/control principles (WP.29-157-06) of Advanced Driver Assistance Systems (ADAS). GRSG noted no comments on GRSG-103-15. The expert from OICA introduced GRSG-104-20 proposing a number of amendments to WP.29-157-06. GRSG endorsed the proposed amendments. The Chair volunteered to inform WP.29 on the results and requested the secretariat to submit GRSG-104-20 to WP.29 for consideration at its session in June 2013 (see WP.29-160-10).