29. The expert from CLEPA presented GRRF-74-37, on behalf of CLCCR, proposing to introduce into Regulation No. 79 provisions permitting the type approval of positive steering of trailers using energy supply and electrical control from the towing vehicle. His proposal focused on the energy supply connectors and the transmission of steering control data (digital information interchange). The expert from the Netherlands proposed extending the work to the power supply provisions necessary to guarantee a good functionality as well as a sufficient level of safety. GRRF agreed to add this as a new item on the agenda of the next session.

30. The expert from CLEPA introduced ECE/TRANS/WP.29/GRRF/2013/5 proposing to align the test speed and braking performance requirements for vehicles of the category M1 and N1 in the event of energy source failure with those in Regulations Nos. 13 and 13-H. GRRF adopted this proposal and requested the secretariat to submit it to WP.29 and AC.1 for consideration at their June 2013 sessions as draft Supplement 4 to the 01 series of amendments to Regulation No. 79.

37. On behalf of CLCCR, the expert from CLEPA proposed amendments to UN Regulation No. 79 (ECE/TRANS/WP.29/GRRF/2013/25) inserting new requirements for trailers with a steering control system utilising electrical energy from the towing vehicle. The proposal received some comments (GRRF-75-11). The expert from Japan noted the absence of a definition for “IP54”. GRRF agreed to resume consideration of this subject at its next session on the basis of a revised proposal.