UN Regulation No. 138
Quiet Road Transport Vehicles

Uniform provisions concerning the approval of Quiet Road Transport Vehicles with regard to their reduced audibility (QRTV)

This Regulation requires an “audible vehicle alerting system” (AVAS) to reduce the risk of collisions with vulnerable road users unable to aurally detect the presence of electrified vehicles.

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Revisions and Amendments

Series of Amendments and Supplements

Application of the Regulation

Contracting Parties applying UN R138

Related News and Information


5 Dec 2017	5 Dec 2017 \| Hearing hybrid and electric vehicles while quieting noise pollution	Formal title to be determined. QRTV-GTR Quiet Road Transport Vehicles WP.29 Regulatory Project Quiet Road Transport Vehicles and Uniform provisions concerning the approval of Quiet Road Transport Vehicles with regard to their reduced audibility (QRTV) This Regulation requires an "audible vehicle alerting system" (AVAS) to reduce the risk of collisions with vulnerable road users unable to aurally detect the presence of electrified vehicles. Quiet Road Transport Vehicles Quiet Road Transport Vehicles UN Regulation No. 138 UN R138
2 Mar 2017	2 Mar 2017 \| What Will Electric Cars Sound Like?	Formal title to be determined. QRTV-GTR Quiet Road Transport Vehicles WP.29 Regulatory Project Quiet Road Transport Vehicles and Uniform provisions concerning the approval of Quiet Road Transport Vehicles with regard to their reduced audibility (QRTV) This Regulation requires an "audible vehicle alerting system" (AVAS) to reduce the risk of collisions with vulnerable road users unable to aurally detect the presence of electrified vehicles. Quiet Road Transport Vehicles Quiet Road Transport Vehicles UN Regulation No. 138 UN R138
13 Oct 2016	13 Oct 2016 \| Entry into force of UN Regulation No. 138 on Quiet Road Transport Vehicles	Uniform provisions concerning the approval of Quiet Road Transport Vehicles with regard to their reduced audibility (QRTV) This Regulation requires an "audible vehicle alerting system" (AVAS) to reduce the risk of collisions with vulnerable road users unable to aurally detect the presence of electrified vehicles. Quiet Road Transport Vehicles Quiet Road Transport Vehicles UN Regulation No. 138 UN R138
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Development of the Regulation

Pending Changes to UN R138

Latest Documents

31 Jan 2020

UN R138 : Proposal for Supplement 2 to the 01 series of amendments | GRBP-71-28

29 Jan 2020

UN R51 : ASEP II informal group status report | GRBP-71-25

12 Nov 2019

IWVTA informal group: Report to WP.29 | WP.29-179-08

See all 104 related documents

Latest Meeting Discussions
Working Party on Noise and Tyres \| Session 71 \| 28-31 Jan 2020
Working Party on Noise and Tyres \| Session 70 \| 11-13 Sep 2019
World Forum for the Harmonization of Vehicle Regulations \| Session 178 \| 24-28 Jun 2019
	See more related meetings

Latest Meeting Discussions
Working Party on Noise and Tyres \| Session 71 \| 28-31 Jan 2020
Working Party on Noise and Tyres \| Session 70 \| 11-13 Sep 2019
World Forum for the Harmonization of Vehicle Regulations \| Session 178 \| 24-28 Jun 2019
	See more related meetings

Regulation:	UN Regulation No. 117 \| Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance
Document:	Revision 4 \| Amendment 2
Corresponds to:	02 series of amendments \| Supplement 10 (Entered into force on 11 Jan 2020)
Based on:	Document WP.29/2019/54 Proposal to correct a type in Annex 7- Appendix 2, Part 2, Paragraph 5 where the snow group index should read “1.00”, not “100” as appeared erroneously in the adopted text correct the text where the word “tyres” was inadvertently omitted from Paragraph 2.1. align the provisions of UN R117 regarding approval numbers and markings with the provisions of Schedule 4 to the revised 1958 Agreement.

Regulation:	UN Regulation No. 129 \| Enhanced Child Restraint Systems
Document:	Revision 4 \| Amendment 2
Corresponds to:	03 series of amendments \| Supplement 2 (Entered into force on 11 Jan 2020)
Based on:	Document WP.29/2019/40 Proposal to introduce new and modified labeling and to clarify packaging information to distinguish between forward-facing-only, rear-facing-only, and convertible CRS in order to reduce the risk of users misusing these enhanced CRS clarify that assessment of the DE plane only applies to rearward-facing Child Restraint Systems (CRS) in UN Regulation No. 44 and therefore does not apply to forward-facing child restraints that maintain structure of the child restraint behind the head of the dummy specify the dimensions of the approval number update i-Size universal ISOFIX, Specific Vehicle ISOFIX, i-Size Booster seat and Specific Vehicle Booster seat numbering (omitted in WP29-2018-045) rearrange the dimensions mark for arrangements of the approval mark where used in combination with the module mark change the 145 cm stature of the Specific Vehicle Booster seat to 150 cm stature as this is the correct upper limit, and clarify that Conformity of Production assessments shall be conducted under the same requirements as those of the original approval or, if applicable, the extension of the approval.

Regulation:	UN Regulation No. 129 \| Enhanced Child Restraint Systems
Document:	Revision 3 \| Amendment 4
Corresponds to:	02 series of amendments \| Supplement 5 (Entered into force on 11 Jan 2020)
Based on:	Document WP.29/2019/39 Proposal to introduce new and modified labeling and to clarify packaging information to distinguish between forward-facing-only, rear-facing-only, and convertible CRS in order to reduce the risk of users misusing these enhanced CRS clarify that assessment of the DE plane only applies to rearward-facing Child Restraint Systems (CRS) in UN Regulation No. 44 and therefore does not apply to forward-facing child restraints that maintain structure of the child restraint behind the head of the dummy specify the dimensions of the approval number correct the term “Regulation No. 129-02” to “UN Regulation No. 129/02” change the 145 cm stature of the Specific Vehicle Booster seat to the 150 cm stature as this is the upper limit, and modify the approval markings for consistency between technical services and approval authorities and between the labels of products approved under the 02 and 03 series.

Regulation:	UN Regulation No. 129 \| Enhanced Child Restraint Systems
Document:	Revision 1 \| Amendment 7
Corresponds to:	01 series of amendments \| Supplement 6 (Entered into force on 11 Jan 2020)
Based on:	Document WP.29/2019/38 Proposal to introduce new and modified labeling and to clarify packaging information to distinguish between forward-facing-only, rear-facing-only, and convertible CRS in order to reduce the risk of users misusing these enhanced CRS, and clarify that assessment of the DE plane only applies to rearward-facing Child Restraint Systems (CRS) in UN Regulation No. 44 and therefore does not apply to forward-facing child restraints that maintain structure of the child restraint behind the head of the dummy.

UN Regulation No. 138 Quiet Road Transport Vehicles