Report from the 5th session of the informal working group on Automated Connections between Vehicles working on language to integrate such systems within UN R13 (heavy-duty braking) and UN R55 (mechanical couplings).

Copy of the text submitted to GRRF to clarify the requirements in Annex 21 of Regulation No. 13 regarding the use of simulation, specifically in the
Appendices 1, 2 and 3 of Annex 21.

Working draft of Annex 21-Appendix 2 of UN R13 on heavy duty braking to address the use and validation of the dynamic stability simulation tool for evaluating electronic vehicle stability control systems.

Working draft of Annex 21-Appendix 1 to UN R13 on heavy-duty braking systems that would address the use of dynamic stability simulations.

Revised draft copy of the “Proposal for Supplement 9 to the 11 series of amendments to Regulation No. 13” returned by GRRF for revision.

This proposal aims to improve brake distribution between truck and trailer of heavy vehicle combinations at everyday low decelerations, to enhance uniform use of all wheel brakes and thereby to counteract loss of full brake performance. The proposal is based on ISO 20918.