UN R79 Supplement 14 (03 series) · UNECE Regulation No. 79 (ECE R79) — Uniform provisions concerning the approval of vehicles with regard to steering equipment.
UN R79 — Supplement 14 to the 03 series of amendments
Supplement 13 → 14
- What changed
- Condition (c) of paragraph 5.6.5. now says which version or series of UN Regulation No. 171 the DCAS must comply with.
- For functionality defined as ACSF of Category B2 or E, condition (c) names the 01 series of amendments or later. For functionality defined as ACSF of Category D, it names the original version or later series of amendments.
- For ACSF of Category B1 and C, condition (c) now refers to “the original version or later series of amendments of UN Regulation No. 171”.
- Why
- The technical requirements needed to type-approve ACSF-B2 or ACSF-E features exist only in the 01 series (or later) of UN Regulation No. 171.
- A reference to the 01 series is not necessary for ACSF of Category D, but its provisions are updated to reference the original version.
Q1What changed7 changes
Series of UN Regulation No. 171 for ACSF of Category B2, D or E (para. 5.6.5.)
Condition (c) of paragraph 5.6.5. now says which version or series of UN Regulation No. 171 the DCAS must comply with. For functionality defined as ACSF of Category D, condition (c) names the original version or later series of amendments. For functionality defined as ACSF of Category B2 or E, condition (c) names the 01 series of amendments or later. Before this supplement, condition (c) named UN Regulation No. 171 with no version or series. The first sentence of paragraph 5.6.5. now has a comma before “which”.
Reference to UN Regulation No. 171 for ACSF of Category B1 and C (paras. 5.6.2. and 5.6.4.)
Condition (c) of paragraphs 5.6.2. and 5.6.4. now refers to “the original version or later series of amendments of UN Regulation No. 171”. Before this supplement, the text said “UN Regulation No. [DCAS]”. The first sentence of paragraph 5.6.2. now has a comma before “which”.
Q2Why it changed
- Proposed by
- Experts from the United Kingdom of Great Britain and Northern Ireland, and Germany
- Working party
- GRVA, 22nd session (June 2025)
Reasons
The technical requirements needed to type-approve ACSF-B2 or ACSF-E features exist only in the 01 series (or later) of UN Regulation No. 171. Examples of such features are ‘withholding hands on requests’ operation and system-initiated manoeuvres.
Sources (2)
“It is only in the 01 series (or later) of UN Regulation No. 171, where the necessary technical requirements exist to allow the type approval of such features”
“such features that exhibit functionality meeting the definition of ACSF-B2 or ACSF-E, such as ‘withholding hands on requests’ operation or performing system-initiated manoeuvres”
For the avoidance of doubt, a reference to the 01 series (or later) is considered necessary in the provisions on ACSF-B2 and ACSF-E. This makes sure that the prohibition in UN Regulation No. 79 for such a feature remains enacted as necessary.
Sources (2)
“Therefore, for the avoidance of doubt, it is considered necessary to make reference to the 01 series (or later) in the reference to UN Regulation No. 171 in the provisions concerning ACSF-B2 and ACSF-E.”
“This ensures that the prohibition in UN Regulation No. 79 for such feature remains enacted as necessary.”
A reference to the 01 series is not necessary for ACSF of Category D. Its provisions that refer to UN Regulation No. 171 are updated to reference the original version.
Source
“Whilst there is not such necessity for ACSF of Category D, the corresponding provisions referring to UN Regulation No. 171 are updated to reference the original version.”
Further clarification is added to the provisions on ACSF of Category B1 and C that were agreed before.
Source
“Further clarification is also added to the provisions concerning ACSF of Category B1 and C which were agreed to previously”
Document trail
- —ProposalGRVA-21-58Informal proposal by the experts from Germany, the Netherlands and the United Kingdom
- 2025-04RevisedECE/TRANS/WP.29/GRVA/2025/32Working document for the 22nd GRVA session, based on GRVA-21-58
- —Working party adoptsECE/TRANS/WP.29/GRVA/22Session report, para. 51
- 2025-08Sent to WP.29ECE/TRANS/WP.29/2025/137Text that GRVA sent to WP.29 and AC.1
- 2025-11WP.29 adoptsECE/TRANS/WP.29/1188Adopted at the 197th session (session report, para. 110)
- 2026-06-04In forceC.N.212.2026.TREATIES-XI.B.16.79UN depositary notification
Q3Who is affected
Vehicle manufacturer
- For ACSF of Category B2, D or E functionality, check the DCAS against condition (c) of paragraph 5.6.5.
- For ACSF of Category B2 or E, make sure the DCAS meets condition (c) with the 01 series or later.
- Update the documents that quote condition (c) of paragraph 5.6.5. or the old “UN Regulation No. [DCAS]” text.
Component supplier
- Tell the vehicle manufacturer which version or series of UN Regulation No. 171 your DCAS complies with.
Technical service / Approval authority
- Check the DCAS against the version or series of UN Regulation No. 171 that condition (c) of paragraph 5.6.5. names.
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ⓘ This report gives advice only. It is not legal or type-approval advice.
More UN R79 change reports
- 05 series — Supplement 1
- 05 series — Base text
- 04 series — Supplement 12
- 04 series — Supplement 11
- 04 series — Supplement 10
- 04 series — Supplement 9
- 04 series — Supplement 8
- 04 series — Supplement 7
- 04 series — Supplement 6
- 04 series — Supplement 5
- 04 series — Supplement 4
- 04 series — Supplement 3
- 04 series — Supplement 2
- 04 series — Supplement 1
- 04 series — Base text
- 03 series — Supplement 17
- 03 series — Supplement 16
- 03 series — Supplement 15
- 03 series — Supplement 13
- 03 series — Supplement 12
- 03 series — Supplement 11
- 03 series — Supplement 10
- 03 series — Supplement 9
- 03 series — Supplement 8
- 03 series — Supplement 7
- 03 series — Supplement 6
- 03 series — Supplement 5
- 03 series — Supplement 4
- 03 series — Supplement 3
- 03 series — Supplement 2
- 03 series — Supplement 1