WP.29 191st session: amendments to UN Regulations
14–16 November 2023
Amendments to UN Regulations that the WP.29 documents submitted for the vote at the 191st session. Each change report shows what changes, why, and who is affected.
This list has the 40 amendments with a RegVault change report, in 27 regulations. It is not the full agenda of the session.
UN R0 — International Whole Vehicle Type Approval (IWVTA)
- 06 series — Base text
Annex 4 now lists a later series of amendments for UN Regulations Nos. 12, 46, 48, 110, 117, 127 and 135.
UN R14 — Safety-belt anchorages
- 09 series — Supplement 3
New note a in Annex 6 applies to forward facing seats that face built-in child restraint systems in M2 and M3 vehicles.
UN R16 — Safety-belts
- 09 series — Base text
New paragraphs 2.48. to 2.54. define the lower tether anchorage (LTA) and related lower tether terms.
- 08 series — Supplement 5
For M2 and M3 vehicles of all classes, forward-facing seats that face Built-in Child Restraint Systems must now have at least Ar seat belts.
UN R17 — Strength of seats, their anchorages and head restraints
- 11 series — Base text
Forward-facing seats fitted or intended to be fitted with a head restraint in other seating positions and other in-scope vehicle categories must comply (para. 5.4.3.).
UN R24 — Visible pollutants, measurement of power of C.I. engines (Diesel smoke)
- 03 series — Supplement 11
Annex 4, paragraph 3.2. now requires the reference fuel given in Annex 6, not the fuel available on the market.
UN R43 — Safety glazing
- 01 series — Supplement 11
Opaque obscuration can now be exempted in Zone I, in limited areas where a sensing device is intended to be bonded to the windscreen.
UN R48 — Installation of lighting and light-signalling devices
- 08 series — Supplement 4
Lighting units for AFS passing beam may now also produce Driver Assistance Projection, as the adaptive main beam could before (para. 6.22.9.2.).
- 07 series — Supplement 6
Lighting units for AFS passing beam may now also produce Driver Assistance Projection, as the adaptive main beam could before (para. 6.22.9.2.).
- 06 series — Supplement 19
Lighting units for AFS passing beam may now also produce Driver Assistance Projection, as the adaptive main beam could before (para. 6.22.9.2.).
UN R53 — Installation of lighting and light-signalling devices for L3 vehicles
- 04 series — Base text
Driving-beam and passing-beam headlamps must now be of classes of the 01 or later series of UN Regulation No. 149. The headlamp paragraphs for motorcycles now also use a maximum power limit of 11 kW.
UN R74 — Installation of lighting and light-signalling devices (mopeds)
- 03 series — Base text
Driving beam and passing beam headlamps must now be type-approved to listed classes of the 01 or subsequent series of UN Regulation No. 149.
UN R86 — Installation of lighting and light-signalling devices for agricultural vehicles
- 03 series — Base text
Main-beam and dipped-beam headlamps must now be type-approved to listed classes of UN Regulation No. 149, not to Nos. 98, 112 or 113.
UN R90 — Replacement braking parts
- 02 series — Supplement 11
In case of vehicles of Category L, replacement brake lining assemblies or replacement drum brake linings may be marketed in calliper sets and/or drum sets.
UN R94 — Frontal collision protection
- 05 series — Base text
In the case of a compressed hydrogen-fuelled vehicle, new paragraphs 5.2.7.1. to 5.2.7.3. set requirements on hydrogen leakage, gas concentration and container attachment.
UN R95 — Lateral collision protection
- 06 series — Base text
New paragraphs 5.3.7. to 5.3.7.3. add requirements for compressed hydrogen-fuelled vehicles: hydrogen leakage and gas concentration after the crash, and container attachment.
- 05 series — Supplement 4
Each of Figures 2a to 2e in Annex 5, Appendix 2 now has a legend table.
- 04 series — Supplement 2
Each of Figures 2a to 2e in Annex 5, Appendix 2 now has a legend table.
UN R100 — Electric power trained vehicles
- 03 series — Supplement 3
The crush force is applied horizontally and in the direction of travel of the REESS, and horizontally and perpendicular to it.
- 02 series — Supplement 5
Annex 8D, paragraph 3.2.1., now names two force directions: horizontally in the direction of travel of the REESS, and horizontally perpendicular to it.
UN R122 — Heating systems
- 00 series — Supplement 7
The manufacturer can exceed the Annex 5 temperature limits if it demonstrates during the type approval process that its safety concept covers for higher temperatures. The risk for occupants to get burns must not increase compared to the risk caused by the limit temperatures. In vehicles of categories M2 and M3, this possibility applies only to the driver and to passengers seated in the row adjacent to the driver.
UN R129 — Enhanced Child Restraint Systems (ECRS)
- 04 series — Base text
New paragraphs 2.63. to 2.63.6. define the lower tether anchorage (LTA) and related lower tether terms.
- 03 series — Supplement 10
A new footnote is added to the words “only one belt route” in items (i) and (j) of paragraph 3.2.2. One belt route applies over the entire stature range, regardless of the different configurations of use for which the ECRS will be approved.
UN R134 — Hydrogen and Fuel Cell Vehicles (HFCV)
- 02 series — Base text
Annex 3 now gives a two-stage localized/engulfing fire test for the CHSS: a localized fire stage followed by an engulfing stage.
UN R135 — Pole Side Impact (PSI)
- 02 series — Supplement 2
In Annex 6, the last term of the formulas for ρo' and ρf' is now 1.07 instead of 0.5789.
- 01 series — Supplement 4
Paragraph 2.14. now has two definitions of passenger compartment: one “with regard to occupant protection” and one “for hydrogen safety assessment”.
- 00 series — Supplement 3
The definitions of the compressed hydrogen storage system (CHSS), the container and the shut-off valve change, and new paragraph 2.4.1. defines “Container Attachments”.
UN R137 — Restraint system in front impact
- 03 series — Base text
In the case of a compressed hydrogen-fuelled vehicle, new paragraphs 5.2.7.1. to 5.2.7.3. set requirements on hydrogen leakage, gas concentration and container attachment.
UN R145 — ISOFIX anchorage systems, ISOFIX top tether anchorages and i-Size seating positions
- 01 series — Base text
New paragraphs 5.4. to 5.4.3.3. give applicability, number, positioning and design requirements for lower tether anchorages (LTA).
- 00 series — Supplement 3
Paragraph 5.3.6. now also names the specific vehicle built-in Enhanced Child Restraint Systems for use by children up to 105 cm height.
UN R149 — Road Illumination Devices (RID)
- 01 series — Supplement 2
New paragraph 5.3.2.10. allows the Driver Assistance Projection according to UN Regulation No. 48, paragraph 5.35., with the passing beam. It may be produced by modifying the passing-beam light distribution within a zone limited by vertical and horizontal angles.
UN R153 — Fuel system integrity and electric power train safety at rear-end collision
- 00 series — Supplement 4
A new item (j) adds the basic configuration and main characteristics of the compressed hydrogen storage system. Like the other items, it applies in so far as it has an adverse effect on the result of the impact test.
UN R154 — Worldwide harmonized Light vehicles Test Procedure (WLTP)
- 02 series — Supplement 1
New paragraph 12.3. sets dates for Level 1A OVC-HEVs and OVC-FCHVs to move to the normalised distances dneb and dnec.
UN R157 — Automated Lane Keeping Systems (ALKS)
- 01 series — Supplement 2
Paragraph 5.1.7. now refers to the 06 or later series of amendments to UN Regulation No. 10, instead of the 05 or later series.
- 00 series — Supplement 4
Paragraph 5.1.7. now refers to the 06 or later series of amendments to UN Regulation No. 10, instead of the 05 or later series.
UN R160 — Event Data Recorder (EDR)
- 02 series — Base text
New paragraph 6. adds a component test: the EDR acceleration trace must stay in a +/- 10 per cent full-scale corridor.
- 01 series — Supplement 2
In Annex 4, Table 1, the “+/- 10%” accuracy of post-crash lateral and longitudinal acceleration now relates to the full range of the accelerometer.
- 00 series — Supplement 2
Annex 4, Table 1 has a new footnote to the “+/- 10%” accuracy of lateral and longitudinal acceleration (post-crash).
UN R161 — Devices against Unauthorized Use
- 00 series — Supplement 4
In Annex 7, paragraph 4., tests must now follow the technical prescriptions and transitional provisions of UN Regulation No. 10, 06 series of amendments. Before, the text referred to the 04 series of amendments.
UN R162 — Immobilizers
- 00 series — Supplement 5
In Annex 7, paragraph 4., tests must now follow the technical prescriptions and transitional provisions of UN Regulation No. 10, 06 series of amendments. Before, the text referred to the 04 series of amendments.