Guidance document on interpreting “type of REESS” (Rechargeable Electrical Energy Storage System) as defined in paragraph 2.48. of UN Regulation No. 100. The document establishes that when judging whether differences are significant, the evaluation should be from the perspective of whether the difference has a substantial impact on the safety performance of the REESS as required by UN Regulation No. 100. It provides consideration on essential aspects including manufacturer’s trade name or mark, chemistry, capacity and physical dimensions of cells, number of cells and mode of connection, construction and materials of casing, and ancillary devices for physical support, thermal management and electronic control.

Proposal to:

• Delete entries for annexes 9A, 9B, 9E (including its appendix 1) and 9F from the table of contents and treat as reserved,
• Insert new para. 0.2. describing the supplement’s purpose to streamline contents by eliminating redundant requirements and test procedures,
• Delete and replace paras. 6.2. to 6.3.2.2., 6.5. to 6.5.3.1., 6.10. to 6.10.2.3., and 6.14. to 6.14.2. with reserved status,
• Add new sentences to paras. 6.6.2.2., 6.7.2.2., 6.8.2.2. and 6.9.2.2. making isolation resistance measurement not required if REESS is equipped with isolation resistance monitoring system,
• Amend para. 6.12.3. to clarify requirements for REESS other than open-type traction battery,
• Replace “function of characteristic” by “function or characteristic” in para. 6.15.3.1.,
• Add new sentence to Annex 9 appendix 2 para. 1. allowing SOC adjustment at different ambient temperature,
• Delete annexes 9A, 9B, 9E and treat as reserved,
• Amend Annex 9F para. 3.3. heading and delete first paragraph,
• Amend Annex 9G para. 3.1. (b) and delete sub-paragraphs,
• Amend Annex 9H paras. 3.2.1. through 3.2.4. (c),
• Delete Annex 9J and treat as reserved.

Proposal to amend para. 0. to extend application to vehicles of category Y, amend para. 1.4. to exclude category Y vehicles and certain category N₁ vehicles, add definitions and clarifications for category Y vehicles in paras. 2.8., 2.22., 2.29., 2.32., 2.44., and 2.45., and replace wording in para. 5.3.1.2. concerning Automated Driving System activation and delete footnote 9.

Proposal to insert a new introduction section accounting for vehicles of categories X and Y equipped with an Automated Driving System (ADS), amend footnote 1 to reference the Consolidated Resolution on the Construction of Vehicles (R.E.3.), document ECE/TRANS/WP.29/78/Rev.8, and amend para. 6.1.5. to clarify that the exemption for sensors and driver assistance systems does not apply to vehicles of categories X and Y or automated driving systems unless the ADS performance of the Designated Driving Task is not affected.

Proposal to insert para. 5.8.4.2. requiring electric side window controls adjacent to the front seat row be within reach and directly accessible without multiple actions, renumber former para. 5.8.4.2. as para. 5.8.4.3., insert para. 5.8.8. requiring electric side windows of the front seat row to function for at least 2 minutes during vehicle submergence, and insert Annex 11 describing submergence test procedures including container-based and slope-entry methods.