Updated proposal for a series of amendments to clarify a variety of requirements, notably concerning test surface requirements, ABS cycling, and peak braking coefficient measurements. The proposal clarifies the terms “inoperative” and “disconnected”, introduces the “K-method” and the use of a representative vehicle based on UN R13-H.

This supplement would introduce provisions for fully automatic coupling systems and clarify references in the regulation to Regulation No. 10 on electromagnetic compatibility. This proposal combines two distinct proposals (document GRRF/2013/12 as amended by Annex II to the GRRF 75th session report and document GRRF/2013/13 not amended) approved by the GRRF at its September 2013 session.