UN R13 Supplement 3 (12 series) · UNECE Regulation No. 13 (ECE R13) — Uniform provisions concerning the approval of vehicles of categories M, N and O with regard to braking.
UN R13 — Supplement 3 to the 12 series of amendments
Supplement 2 → 3
- What changed
- Paragraph 5.1.2.4.3.1. now says that the demonstration to the Technical Service includes test (a) of Annex 4, paragraph 1.8.2.5.
- It also adds the submission of detailed documentation on the system strategies and how they make sure endurance braking requirements can always be met.
- Why
- The proposal aimed at clarifying the requirements related to the Type IIA test.
- The proposer did not consider it abundantly clear that the Type IIA test should always be performed in one case at least. That case is a battery state of charge in which the battery is expected to absorb the descent energy.
- The proposal aimed to foster uniform application of the regulation, and GRVA agreed with the clarifications proposed.
Q1What changed1 change
Demonstration to the Technical Service: test and documentation (para. 5.1.2.4.3.1.)
Paragraph 5.1.2.4.3.1. sets conditions under which a vehicle is deemed to comply with paragraphs 5.1.2.4.1. and 5.1.2.4.2. As before, this must be demonstrated to the satisfaction of the Technical Service. This supplement adds that the demonstration includes test (a) of Annex 4, paragraph 1.8.2.5. It adds the submission of detailed documentation that explains the system strategies and how they make sure endurance braking requirements can always be met.
Q2Why it changed
- Proposed by
- Expert from the United Kingdom of Great Britain and Northern Ireland
- Working party
- GRVA, 17th session (September 2023)
Reasons
A query was raised in WP.15 about the amendments made by Supplement 18 to the 11 series of amendments to UN Regulation No. 13. Those amendments introduced special requirements on endurance brakes for vehicles using regenerative braking systems.
Sources (2)
“A query was raised in WP.15 (ECE-TRANS-WP15-113-GE-inf6e) over the amendments made by supplement 18 of the 11 series of amendments to Regulation No.13.”
“This introduced special requirements on endurance brakes for vehicles utilising for those using regenerative braking systems.”
The United Kingdom of Great Britain and Northern Ireland reviewed the adopted provisions. It did not consider it abundantly clear that, at least in one case, the Type IIA test should always be performed. That is the case where the battery is in a state of charge in which it is expected to absorb the energy of the descent.
Sources (2)
“In reviewing the adopted provisions, the United Kingdom of Great Britain and Northern Ireland does not consider that it is abundantly clear that the Type IIA test should always be performed”
“at least in the case where the battery is in a state of charge that it is expected absorb the energy from the decent of the vehicle.”
The proposal is a clarification to make the current understanding more precise.
Source
“The proposal is a clarification to make the current understanding more precise.”
The proposal was drafted after discussions at a recent session of the Working Party on the Transport of Dangerous Goods. Its aim was to foster uniform application of the regulation. GRVA agreed with the clarifications proposed.
Sources (2)
“was drafted following discussions at a recent session of the Working Party on the Transport of Dangerous Goods, with the aim to foster uniform application of the regulation.”
“GRVA agreed with the clarifications proposed.”
Document trail
- 2023-07ProposalECE/TRANS/WP.29/GRVA/2023/24Proposal by the expert from the United Kingdom of Great Britain and Northern Ireland
- —Working party adoptsECE/TRANS/WP.29/GRVA/17GRVA session report, para. 100
- 2023-12Sent to WP.29ECE/TRANS/WP.29/2024/5Text that GRVA sent to WP.29 and AC.1
- 2024-03WP.29 adoptsECE/TRANS/WP.29/1177Adopted at the 192nd session (session report, para. 140)
- 2024-09-22In forceC.N.398.2024.TREATIES-XI.B.16.13UN depositary notification
Q3Who is affected
Vehicle manufacturer
- If you use paragraph 5.1.2.4.3.1., be ready for test (a) of Annex 4, paragraph 1.8.2.5.
- If you use paragraph 5.1.2.4.3.1., document in detail your system strategies and how endurance braking requirements can always be met.
- Update your documents that quote the text of paragraph 5.1.2.4.3.1.
Component supplier
- If a vehicle manufacturer uses paragraph 5.1.2.4.3.1., give it the information it needs on the strategies implemented in the system.
Technical service / Approval authority
- When paragraph 5.1.2.4.3.1. is used, check that the demonstration includes test (a) of Annex 4, paragraph 1.8.2.5.
- When paragraph 5.1.2.4.3.1. is used, check that detailed documentation explaining the system strategies is submitted.
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ⓘ This report gives advice only. It is not legal or type-approval advice.
More UN R13 change reports
- 15 series — Supplement 3
- 15 series — Supplement 2
- 15 series — Supplement 1
- 15 series — Base text
- 14 series — Supplement 4
- 14 series — Supplement 3
- 14 series — Supplement 2
- 14 series — Supplement 1
- 14 series — Base text
- 13 series — Supplement 7
- 13 series — Supplement 6
- 13 series — Supplement 5
- 13 series — Supplement 4
- 13 series — Supplement 3
- 13 series — Supplement 2
- 13 series — Supplement 1
- 13 series — Base text
- 12 series — Supplement 9
- 12 series — Supplement 8
- 12 series — Supplement 7
- 12 series — Supplement 6
- 12 series — Supplement 5
- 12 series — Supplement 4
- 12 series — Supplement 2
- 12 series — Supplement 1
- 12 series — Base text
- 11 series — Supplement 23
- 11 series — Supplement 22
- 11 series — Supplement 21
- 11 series — Supplement 20
- 11 series — Supplement 19
- 11 series — Supplement 18
- 11 series — Supplement 17
- 11 series — Supplement 16