WP.29 178th session: amendments to UN Regulations
25–28 June 2019
Amendments to UN Regulations that the WP.29 documents submitted for the vote at the 178th session. Each change report shows what changes, why, and who is affected.
This list has the 13 amendments with a RegVault change report, in 12 regulations. It is not the full agenda of the session.
UN R17 — Strength of seats, their anchorages and head restraints
- 09 series — Supplement 1
In paragraph 1., the Regulation does not apply with regard to side-facing or rearward-facing seats, or to any head restraint fitted to these seats. This sentence now has an exception for vehicles of category M2 and M3 of classes A and I, subject to the provisions of paragraph 5.1.1.
UN R24 — Visible pollutants, measurement of power of C.I. engines (Diesel smoke)
- 03 series — Supplement 5
Paragraphs 2.2., 4.1.5. and 4.2.1.2. now also refer to UN Regulation No. 85 for net power and the engine tests.
UN R30 — Tyres for passenger cars and their trailers
- 02 series — Supplement 21
New paragraph 2.11. defines an “Extended Mobility Tyre (EMT)”, and new paragraph 3.1.15. adds a symbol for a tyre that is an EMT.
UN R44 — Child Restraint Systems
- 04 series — Supplement 16
As from 1 September 2020, new paragraph 17.20. stops new approvals under this Regulation for child restraint systems other than Group 3. New paragraph 17.21. stops their extensions as from 1 September 2022.
UN R64 — Temporary use spare unit, run flat tyres
- 03 series — Supplement 1
New paragraph 2.4.5. defines an “Extended Mobility Tyre”. Paragraph 1. now also covers vehicles of category M1 and N1 when equipped with extended mobility tyres.
UN R75 — Tyres for L-category vehicles
- 00 series — Supplement 18
Letter code “V” now identifies tyres suitable for maximum speeds above 240 km/h but below 270 km/h, and “Z” those for 270 km/h or above.
UN R78 — Braking (category L vehicles)
- 04 series — Supplement 1
New paragraph 5.1.17. gives the only conditions for generation and de-activation of the braking signal to illuminate stop lamp(s). Application of any service brake by the rider must generate it.
UN R79 — Steering equipment
- 03 series — Supplement 1
The optical and the acoustic or haptic warning signal for an ESF intervention must now be maintained as long as the intervention exists.
UN R83 — Emissions of M1 and N1 vehicles
- 07 series — Supplement 9
Annex 7 and its Appendix 1 now allow an alternative equation for variable volume enclosures, at the choice of the manufacturer.
- 06 series — Supplement 13
Annex 7 and its Appendix 1 now allow an alternative equation for variable volume enclosures, at the choice of the manufacturer.
UN R85 — Measurement of the net power and the 30 min. power
- 00 series — Supplement 9
In Annex 5, Table 1, footnote 1b, the case "two-stroke and positive-ignition engines" now reads "two-stroke engines".
UN R90 — Replacement braking parts
- 02 series — Supplement 5
Paragraph 2.1.1. of Annex 7 adds vehicle categories L6 and L7 to the braking tests of UN Regulation No. 78, Annex 3, paragraph 1.
UN R115 — LPG and CNG retrofit systems
- 00 series — Supplement 8
New paragraphs 2.8. and 2.9. define the NEDC and WLTC test cycles.