WP.29 195th session: amendments to UN Regulations
4–7 March 2025
Amendments to UN Regulations that the WP.29 documents submitted for the vote at the 195th session. Each change report shows what changes, why, and who is affected.
This list has the 30 amendments with a RegVault change report, in 20 regulations. It is not the full agenda of the session.
UN R13 — Heavy vehicle braking
- 15 series — Base text
Paragraph 5.1.2.4.2. now says at which mass the endurance braking system must maintain an average speed of 30 km/h.
- 14 series — Supplement 1
This supplement changes the wording of Annex 4, paragraph 2.3.2. on the parking braking of a combination of vehicles on a 12 per cent gradient.
- 13 series — Supplement 4
This supplement changes the wording of Annex 4, paragraph 2.3.2. on the parking braking of a combination of vehicles on a 12 per cent gradient.
- 12 series — Supplement 6
This supplement changes the wording of Annex 4, paragraph 2.3.2. on the parking braking of a combination of vehicles on a 12 per cent gradient.
UN R39 — Speedometer and odometer
- 02 series — Base text
New paragraph 5.8. sets a ±4.0 per cent limit for the total distance indicated against the true distance travelled in the Annex 4 test.
UN R48 — Installation of lighting and light-signalling devices
- 09 series — Supplement 1
Annex 16 now includes a “Predicted trajectory” pattern for the Driver Assistance Projection, with its own width limits in new paragraph 5.35.12.1.
- 08 series — Supplement 6
New paragraph 5.35.12.1. sets the width limits for a Driver Assistance Projection for predicted trajectory, with a maximum of 2,600 mm.
- 07 series — Supplement 8
New paragraph 5.35.12.1. sets the width limits for a Driver Assistance Projection for predicted trajectory, with a maximum of 2,600 mm.
- 06 series — Supplement 21
New paragraph 5.35.12.1. sets the width limits for a Driver Assistance Projection for predicted trajectory, with a maximum of 2,600 mm.
UN R49 — Emissions of C.I. and P.I. (LPG and CNG) engines
- 06 series — Supplement 10
PM number is no longer a pollutant to measure with PEMS (Annex 8, Appendix 1, paragraph A.1.1.).
UN R79 — Steering equipment
- 04 series — Supplement 7
Paragraph 1.2.3. is deleted. Before, the Regulation did not apply to steering systems with ACSF of Categories B2, D or E until specific provisions were introduced in this Regulation.
- 03 series — Supplement 12
Paragraph 1.2.3. is deleted. Before, the Regulation did not apply to steering systems with ACSF of Categories B2, D or E until specific provisions were introduced in this Regulation.
UN R83 — Emissions of M1 and N1 vehicles
- 08 series — Supplement 2
In Table 1 of Appendix 5 to Annex 4, the marks “[3]” and “[4]” are deleted from the file format and file name lines.
UN R92 — Replacement exhaust silencing systems for motorcycles
- 03 series — Base text
Under paragraph 6.3.1., the NORESS and its components must be designed and constructed considering tamper proofing measures.
UN R96 — Emissions from Non-Road Mobile Machinery (NRMM) engines
- 05 series — Supplement 2
In the test report, paragraph 10.3.1. now reads “Hot cycle CO2 (g/kWh)” and paragraph 10.3.4. reads “Cycle CO2 for hot start test (g)”.
UN R100 — Electric power trained vehicles
- 05 series — Base text
Thermal propagation safety is shown by physical testing to new Annex 9K or by risk management analysis. Risk management analysis is used when physical testing is deemed not possible without compromising the REESS safety design. A REESS designed to be charged only by an on-vehicle energy source, up to 2 kWh (Ah × nominal voltage), needs only risk management analysis.
- 04 series — Supplement 2
New paragraphs 3.4. and 3.5. cover confidential information and put the documentation in two parts.
- 03 series — Supplement 5
New paragraphs 3.4. and 3.5. cover confidential information and put the documentation in two parts.
UN R105 — Vehicles for the carriage of dangerous goods
- 07 series — Base text
Electric power trains must not be used for EX vehicles. Before this series, this also applied to FL vehicles.
UN R116 — Anti-theft and alarm systems
- 01 series — Supplement 3
In Annex 11, paragraph 5., the effectiveness of the security measures must now be demonstrated by fulfilling the technical requirements of UN Regulation No. 155.
UN R124 — Replacement wheels for passenger cars
- 00 series — Supplement 4
For aluminium alloy and magnesium alloy wheels, the Annex 4 table now lists tests a, c and e instead of a, b, c and e.
UN R138 — Quiet road transport vehicles (QRTV)
- 02 series — Supplement 1
During measurement in reverse, the maximum level requirement at the front plane for forward driving must be fulfilled in addition to the rear plane requirement.
UN R148 — Light-Signalling Devices (LSD)
- 01 series — Supplement 4
Paragraph 3.3.1.2. no longer says “in part 1 of Annex 7” for the value “a” of the approval marking, which must be at least 5 mm.
UN R149 — Road Illumination Devices (RID)
- 01 series — Supplement 5
Paragraph 4.13.1. is new. A specific function with elements for visible radiation wired so that one failure does not make all stop emitting light must give a failure signal.
- 00 series — Supplement 9
For classes A, B and D and AFS, item (a) of Annex 8, paragraph 3.7.1.2.1., no longer names point HV.
UN R161 — Devices against Unauthorized Use
- 00 series — Supplement 5
In Annex 9, paragraph 5., the effectiveness of the security measures must now be demonstrated by fulfilling the technical requirements of UN Regulation No. 155.
UN R162 — Immobilizers
- 00 series — Supplement 6
In Annex 9, paragraph 5., the effectiveness of the security measures must now be demonstrated by fulfilling the technical requirements of UN Regulation No. 155.
UN R163 — Vehicle Alarm systems
- 00 series — Supplement 3
In Annex 9, paragraph 5., the effectiveness of the security measures must now be demonstrated by fulfilling the technical requirements of UN Regulation No. 155.
UN R168 — Global Real Driving Emissions (Global RDE)
- 00 series — Supplement 1
Under paragraph 6.1., final RDE emissions are calculated for a 4-phase WLTC, and for vehicles with a diesel engine also for a 3-phase WLTC.
UN R171 — Driver Control Assistance System (DCAS)
- 01 series — Base text
The system may now withhold HORs when the vehicle is located on a “Highway” and is operated at a speed up to 130 km/h.