WP.29 189th session: amendments to UN Regulations
7–9 March 2023
Amendments to UN Regulations that the WP.29 documents submitted for the vote at the 189th session. Each change report shows what changes, why, and who is affected.
This list has the 31 amendments with a RegVault change report, in 22 regulations. It is not the full agenda of the session.
UN R13H — Braking of passenger cars
- 00 series — Supplement 18
New paragraph 4.2.2.3. adds the ASTM F2493-20 standard reference test tyre as a method to measure the PBC of the road test surface.
UN R30 — Tyres for passenger cars and their trailers
- 02 series — Supplement 25
New paragraph 3.1.17. adds “ERS” to the required markings, for radial tyres whose ply cords are not substantially at 90° across the complete cross section.
UN R48 — Installation of lighting and light-signalling devices
- 08 series — Supplement 3
Paragraphs 6.4.8., 6.11.8., 6.12.8., 6.18.8. and 6.20.8. now say that a tell-tale indicating failure is mandatory if required by the component regulation.
- 07 series — Supplement 5
Paragraphs 6.4.8., 6.11.8., 6.12.8., 6.18.8. and 6.20.8. now say that a tell-tale indicating failure is mandatory if required by the component regulation.
- 06 series — Supplement 18
Paragraphs 6.4.8., 6.11.8., 6.12.8., 6.18.8. and 6.20.8. now say that a tell-tale indicating failure is mandatory if required by the component regulation.
UN R51 — Noise of M and N categories of vehicles
- 03 series — Supplement 8
The surface of the test track and the dimensions of the test site must be in accordance with ISO 10844:2021. Until five years from the entry into force of Supplement 8, ISO 10844:2014 must also be accepted for all approvals granted under this Regulation.
UN R53 — Installation of lighting and light-signalling devices for L3 vehicles
- 03 series — Supplement 4
The rear-end collision alert signal (RECAS) is a new optional signal, with its own rules in new paragraph 6.17.
- 02 series — Supplement 7
The rear-end collision alert signal (RECAS) is a new optional signal, with its own rules in new paragraph 6.17.
UN R65 — Special warning lamps
- 00 series — Supplement 12
In case of a magnetic attachment, the special warning lamp must be exposed to the test described in new Annex 9.
UN R67 — LPG vehicles
- 04 series — Supplement 2
Paragraphs 6.17.2.1. and 6.17.2.2. now refer to IEC Standard 60529-1989+A1:1999+A2:2013 and add the words “at least the minimum”.
- 03 series — Supplement 3
Paragraphs 6.17.2.1. and 6.17.2.2. now refer to IEC Standard 60529-1989+A1:1999+A2:2013 and add the words “at least the minimum”.
UN R78 — Braking (category L vehicles)
- 05 series — Supplement 2
New paragraph 2.34. defines “automatically commanded braking”.
UN R105 — Vehicles for the carriage of dangerous goods
- 06 series — Supplement 2
New paragraph 5.1.3.5. requires the electric power train to meet UN Regulation No. 100, as amended at least by the 03 series of amendments. Electric power trains must not be used for EX and FL vehicles.
UN R110 — CNG and LNG vehicles
- 06 series — Base text
New Annex 5R gives a benchtop activation test and the qualification tests for the pressure relief device (temperature triggered).
UN R116 — Anti-theft and alarm systems
- 01 series — Supplement 1
Paragraph 5.3.1.1. now says “Before the engine as a motive power can be started” instead of “Before the engine can be started”.
UN R117 — Tyres rolling resistance, rolling noise and wet grip
- 04 series — Base text
Paragraphs 6.2.1. to 6.2.3. add stage 2 wet grip limits for tyres in new state, and paragraph 6.3. adds stage 3 rolling resistance limits.
- 03 series — Supplement 1
A “tyre for use in severe snow conditions” can now be a snow tyre or a special use tyre (paragraph 2.13.1.).
UN R121 — Identification of controls, tell-tales and indicators
- 01 series — Supplement 6
Under paragraph 5.3.3., the indicators, their identifications and the identifications of controls now also need not be illuminated when daytime running lamps are switched on.
UN R125 — Forward field of vision of drivers
- 02 series — Supplement 3
The switch-off provision of paragraph 5.1.3.5.5. now does not apply when the vehicle is in a backing event as defined in UN Regulation No. 158.
UN R131 — Advanced emergency braking systems (AEBS)
- 02 series — Supplement 1
The AEBS function must now be automatically reinstated at each new engine start (or run cycle, as relevant), not each new ignition cycle (para. 5.4.1.1.).
- 01 series — Supplement 3
Paragraphs 6.4.2.3. and 6.5.2.3. are deleted. They limited speed reduction in the warning phase to 15 km/h or 30 per cent of the total subject vehicle speed reduction, whichever was higher.
UN R138 — Quiet road transport vehicles (QRTV)
- 01 series — Supplement 3
For the measurement of vehicles in motion, the test track construction and surface must now meet the requirements of ISO 10844:2021 instead of ISO 10844:2014.
UN R140 — Electronic Stability Control (ESC)
- 00 series — Supplement 5
New paragraph 8.2.2.3. adds the ASTM F2493-20 standard reference test tyre as a method to measure the PBC of the road test surface.
UN R148 — Light-Signalling Devices (LSD)
- 01 series — Supplement 1
The Introduction has a new paragraph at its end about approval markings and the use of the 'Unique Identifier'.
- 00 series — Supplement 5
The 'Unique Identifier' can be used only if this Regulation defines the corresponding Summary Document and the database gives access to it.
UN R149 — Road Illumination Devices (RID)
- 01 series — Supplement 1
The Introduction has a new paragraph at its end about approval markings and the use of the 'Unique Identifier'.
- 00 series — Supplement 7
In Tables 26, 27, 28 and 29, two values of Point BRR change from 2100 and 2275 to 4260 and 4615.
UN R150 — Retro-Reflective Devices (RRD)
- 01 series — Supplement 1
The Introduction has a new paragraph at its end about approval markings and the use of the 'Unique Identifier'.
- 00 series — Supplement 5
The 'Unique Identifier' can be used only if this Regulation defines the corresponding Summary Document and the database gives access to it.
UN R157 — Automated Lane Keeping Systems (ALKS)
- 01 series — Supplement 1
In the list of occurrences of paragraph 8.2.1., item (n) is now “Abortion of Lane Change Manoeuvre” instead of “Abortion of Lane Change Procedure”.
UN R164 — Studded Tyres
- 00 series — Supplement 1
New paragraph 6.3. sets a minimum ice grip index of 1.18 for studded tyres of class C1 for use in severe snow conditions.