Proposal to clarify the purpose of UN R139 which was originally established through the extraction of brake assist system (BAS) provisions from UN R13-H on brake systems. Within the context of UN R13-H, the BAS provisions were written to assess performance in cases where a vehicle was fitted with a brake assist system. As a stand-alone regulation, UN R139 applies only to vehicles that are equipped with BAS. Therefore, this supplement proposes to refine the text to remove the “if fitted” language and ensure that UN R139 can only be applied to a vehicle equipped with a BAS.
83. The World Forum considered the draft amendments under agenda items 4.8.1 to 4.8.9 and recommended their submission to AC.1 for voting, subject to the following corrections:
In ECE/TRANS/WP.29/2018/53, page 2: for “Supplement 15” read “Supplement 16”,
In ECE/TRANS/WP.29/2018/59/Add.1, correct to read:
Insert the missing amendment to former paragraph 3.2.10, to read:
| "3.2.11. | An indication, by means of the “PSI” index (as explained in Annex 7, Appendix 2 to this Regulation) or in kilopascals (kPa), of the inflation pressure to be adopted for the load/speed endurance tests. This indication may be placed on one sidewall only." |
| “1.3. | Inflate the tyre to the pressure corresponding to the indication on the sidewall as specified in paragraph 3.2.11. of this Regulation.” |
84. WP.29 referred informal documents WP.29-175-04 and WP.29-175-05 to the appropriate GR for further consideration.
12. The expert from Australia presented ECE/TRANS/WP.29/GRRF/2018/2 and ECE/TRANS/WP.29/GRRF/2018/3 clarifying the obligation for the vehicle type to be equipped with a Brake Assist System (BAS) or an Electronic Stability Control (ESC) system in order to receive a type approval according to UN Regulation No. 139 or UN Regulation No. 140 respectively. GRRF supported both proposals and requested the secretariat to submit them to WP.29 and AC.1 as draft Supplements 1 to UN Regulations Nos. 139 and 140 for consideration and vote at their June 2018 sessions.
| GRRF/2018/2 | |
| WP.29-175-04 |