Text as approved by the GRSG to introduce type-approval provisions for vehicles equipped with liquefied natural gas propulsion systems. The proposal has been prepared as a new consolidated version of UN Regulation No. 110.
| Reference Number: | WP.29/2013/101 |
| Meeting Session(s): | 161st WP.29 session (12-15 Nov 2013) |
| Document date: | 31 Jul 13 |
| Document status: | Adopted text published |
| Regarding: | |
| View full document file for more information | |
Proposal to introduce type-approval provisions for fuel selection systems and for “valve control at stop-start”. The former focuses on ensuring that dual fuel systems prevent fuel intended for one system from flowing into the other system. The latter would let the tank valves stay open in a commanded stop-start phase as is the case for the idling phase of vehicles not equipped with start-stop systems.
| Reference Number: | WP.29/2014/12 |
| Meeting Session(s): | 162nd WP.29 session (11-14 Mar 2014) |
| Document date: | 17 Dec 13 |
| Document status: | Adopted text published |
| Regarding: | |
| View full document file for more information | |
Proposal as approved by the GRSG Doc to introduce a new class of CNG components (Class 6) operating at a higher pressure.
| Reference Number: | WP.29/2015/13 |
| Meeting Session(s): | 165th WP.29 session (10-13 Mar 2015) |
| Document date: | 23 Dec 14 |
| Document status: | Adopted text published |
| Regarding: | |
| View full document file for more information | |
Proposal to correct the numbering of chapter 18 following the introduction of provisions for automatic valves.
| Reference Number: | WP.29/2015/89 |
| Meeting Session(s): | 167th WP.29 session (10-13 Nov 2015) |
| Document date: | 24 Aug 15 |
| Document status: | Adopted text published |
| Regarding: | |
| Adoption Vote | |
| This proposal (WP.29/2015/89), Not amended, was adopted by the World Forum. Thirty-six Contracting Parties out of the 46 applying UN R110 were present for the vote by AC.1. Thirty-six voted in favor with zero against and zero abstaining. | |
| View full document file for more information | |
Proposal to remove the provisions for welded constructions of compressed natural gas (CNG) cylinders or metal liners, including high-strength steel CNG cylinders and consolidating the earlier proposal (from document WP.29/2015/90 that was adopted but set aside at the November 2015 WP.29 session pending the proposal on cylinder construction) to regulate the discharge direction of pressure relief devices on CNG containers.
| Reference Number: | WP.29/2016/13 |
| Meeting Session(s): | 168th WP.29 session (8-11 Mar 2016) |
| Document date: | 06 Jan 16 |
| Document status: | Adopted text published |
| Regarding: | |
| Adoption Vote | |
| This proposal (WP.29/2016/13) was adopted by the World Forum. Thirty-five Contracting Parties out of the 47 applying UN R110 were present for the vote by AC.1. Thirty-five voted in favor with zero against and zero abstaining. | |
| View full document file for more information | |
Proposal to
| Reference Number: | WP.29/2016/95 |
| Meeting Session(s): | 170th WP.29 session (15-18 Nov 2016) |
| Document date: | 01 Sep 16 |
| Document status: | Adopted text published |
| Regarding: | |
| View full document file for more information | |
Proposal to allow for the use of natural gas refrigeration systems to vehicles propelled by natural gas (CNG or LNG). This proposal addresses a new, environmentally friendly natural gas fuelled refrigeration system for trucks with refrigerated loads that already are propelled by natural gas. Currently paragraph 18.1.7.1 allows heating systems to be fitted on vehicles to heat the passenger compartment and/or the load area of a vehicle, however, the same provision omits cooling systems that are used on trucks for the carriage of loads requiring refrigeration.
| Reference Number: | WP.29/2017/15 |
| Meeting Session(s): | 171st WP.29 session (14-17 Mar 2017) |
| Document date: | 21 Dec 16 |
| Document status: | Adopted text published |
| Regarding: | |
| Adoption Vote | |
| This proposal (WP.29/2017/15) was adopted by the World Forum. Thirty-five Contracting Parties out of the 48 applying UN R110 were present for the vote by AC.1. Thirty-five voted in favor with zero against and zero abstaining. | |
| View full document file for more information | |
Proposal to harmonize the requirements on Compressed Natural Gas (CNG) and/or Liquefied Natural Gas (LNG) vehicles of UN Regulation No. 110 with those of the international standard ISO 11439:2013.
| Reference Number: | WP.29/2018/22 |
| Meeting Session(s): | 174th WP.29 session (12-16 Mar 2018) |
| Document date: | 03 Jan 18 |
| Document status: | Adopted text published |
| Regarding: | |
| Adoption Vote | |
| This proposal (WP.29/2018/22) was adopted by the World Forum. Thirty-six Contracting Parties out of the 49 applying UN R110 were present for the vote by AC.1. Thirty-six voted in favor with zero against and zero abstaining. | |
| View full document file for more information | |
In the absence of complete harmonization with ISO 11439, this proposal recommends that Table 6.4 of UN R110 should be amended by the following for CNG-1 designs:
| Reference Number: | WP.29/2018/153 |
| Meeting Session(s): | 176th WP.29 session (12-16 Nov 2018) |
| Document date: | 20 Aug 18 |
| Document status: | Adopted by WP.29 |
| Regarding: | |
| Adoption Vote | |
| This proposal (WP.29/2018/153) was adopted by the World Forum. Forty Contracting Parties out of the 50 applying UN R110 were present for the vote by AC.1. Forty voted in favor with zero against and zero abstaining. | |
| View full document file for more information | |
Proposal to correct the definition of “manual valve”, including deletion of the phrase “rigidly fixed to the cylinder or tank”. The definition of the manual valve as part of the accessories fitted to the container or tank (para. 4.16.) is different from the definition specified in paragraph 4.22. The proposed editorial change aims at clarifying the text of these definitions.
The proposal also introduces provisions for cargo-compartment refrigeration systems connected to the compressed natural gas (CNG) and/or liquefied natural gas (LNG) system(s).
| Reference Number: | WP.29/2017/115 |
| Meeting Session(s): | 173rd WP.29 session (14-17 Nov 2017) |
| Document date: | 18 Aug 17 |
| Document status: | Adopted text published |
| Regarding: | |
| Adoption Vote | |
| This proposal (WP.29/2017/115) was adopted by the World Forum. Thirty-five Contracting Parties out of the 48 applying UN R110 were present for the vote by AC.1. Thirty-five voted in favor with zero against and zero abstaining. | |
| View full document file for more information | |
Proposal to correct the definition of “manual valve”, including deletion of the phrase “rigidly fixed to the cylinder or tank”. The definition of the manual valve as part of the accessories fitted to the container or tank (para. 4.16.) is different from the definition specified in paragraph 4.22. The proposed editorial change aims at clarifying the text of these definitions.
| Reference Number: | WP.29/2017/114 |
| Meeting Session(s): | 173rd WP.29 session (14-17 Nov 2017) |
| Document date: | 18 Aug 17 |
| Document status: | Adopted text published |
| Regarding: | |
| Adoption Vote | |
| This proposal (WP.29/2017/114) was adopted by the World Forum. Thirty-five Contracting Parties out of the 48 applying UN R110 were present for the vote by AC.1. Thirty-five voted in favor with zero against and zero abstaining. | |
| View full document file for more information | |
Proposal to clarify visibility requirements for CNG cylinders, LNG tanks, and their accessories to facilitate external inspections (e.g. for periodic technical inspection).
| Reference Number: | WP.29/2018/125 |
| Meeting Session(s): | 176th WP.29 session (12-16 Nov 2018) |
| Document date: | 15 Aug 18 |
| Document status: | Adopted by WP.29 |
| Regarding: | |
| Adoption Vote | |
| This proposal (WP.29/2018/125) was adopted by the World Forum. Forty Contracting Parties out of the 50 applying UN R110 were present for the vote by AC.1. Forty voted in favor with zero against and zero abstaining. | |
| View full document file for more information | |
Proposal to introduce requirements for CNG compressor and CNG accumulator components designed to maintain stable pressure in fuel systems and to allow the use of a generator fueled by the vehicle gaseous fuel system that provides electricity to run accessories (e.g., overnight power in sleeper cabs, to maintain battery charge during high electrical power use with loading or lifting equipment).
| Reference Number: | WP.29/2019/16 |
| Meeting Session(s): | 177th WP.29 session (11-15 Mar 2019) |
| Document date: | 14 Dec 18 |
| Document status: | WP.29 amended and adopted |
| Regarding: | |
| Adoption Vote | |
| This proposal (WP.29/2019/16), as amended by para. 105 of the 177th session report, was adopted by the World Forum. Thirty-six Contracting Parties out of the 50 applying UN R110 were present for the vote by AC.1. Thirty-six voted in favor with zero against and zero abstaining. | |
| View full document file for more information | |
Proposal to clarify provisions for periodic testing and periodic requalification of Compressed Natural Gas (CNG) cylinders and Liquefied Natural Gas (LNG) tanks.
| Reference Number: | WP.29/2020/20 |
| Meeting Session(s): | 180th WP.29 session (9-12 Mar 2020) |
| Document date: | 18 Dec 19 |
| Document status: | Adopted text published |
| Regarding: | |
| Adoption Vote | |
| This proposal (WP.29/2020/20) was adopted by the World Forum. Thirty-eight Contracting Parties out of the 52 applying UN R110 were present for the vote by AC.1. Thirty-eight voted in favor with zero against and zero abstaining. | |
| View full document file for more information | |
Proposal to introduce changes/additions in the Change of Design Table to better specify appropriate test requirements for CNG cylinders with composite materials and, in some cases, to harmonize with International Standard Organisation (ISO) standard 11439.
| Reference Number: | WP.29/2020/21 |
| Meeting Session(s): | 180th WP.29 session (9-12 Mar 2020) |
| Document date: | 18 Dec 19 |
| Document status: | Adopted text published |
| Regarding: | |
| Adoption Vote | |
| This proposal (WP.29/2020/21) was adopted by the World Forum. Thirty-eight Contracting Parties out of the 52 applying UN R110 were present for the vote by AC.1. Thirty-eight voted in favor with zero against and zero abstaining. | |
| View full document file for more information | |
Proposal to require, in instances where ogive protective covers are fitted to a cylinder, that the covers be removed before conducting the impact damage (drop) test. The proposal further would amend and clarify the need for a gas flow adjuster under UN R110 with regard to the use of carburetors and fuel injectors. A gas flow adjuster is not necessary when an electronic fuel injection system manages the air/fuel mixture and therefore should be removed from paragraph 18.3.1. An adjuster is needed when air/fuel mixture runs via a carburetor and therefore should be added to paragraph 18.3.2.
| Reference Number: | WP.29/2019/13 |
| Meeting Session(s): | 177th WP.29 session (11-15 Mar 2019) |
| Document date: | 14 Dec 18 |
| Document status: | WP.29 amended and adopted |
| Regarding: | |
| Adoption Vote | |
| This proposal (WP.29/2019/13), as amended by para. 104 of the 177th session report, was adopted by the World Forum. Thirty-six Contracting Parties out of the 50 applying UN R110 were present for the vote by AC.1. Thirty-six voted in favor with zero against and zero abstaining. | |
| View full document file for more information | |
Proposal from GRSG to update the vehicle-fuel identification symbols in line with ISO 17840-4, Part 4 (Propulsion energy identification) and to extend the scope of the identification requirements to N2 and N3 vehicles.
| Reference Number: | WP.29/2021/98 |
| Meeting Session(s): | 185th WP.29 session (23-26 Nov 2021) |
| Document date: | 02 Sep 21 |
| Document status: | Adopted by WP.29 |
| Regarding: | |
| Adoption Vote | |
| This proposal (WP.29/2021/98) was adopted by the World Forum. Thirty-eight Contracting Parties out of the 52 applying UN R110 were present for the vote by AC.1. Thirty-eight voted in favor with zero against and zero abstaining. | |
| View full document file for more information | |
Proposal for GRSG to add provisions for excess flow valves (EFV) which can shut off fuel flow at the time of operation to specific components.
| Reference Number: | WP.29/2021/107 |
| Meeting Session(s): | 185th WP.29 session (23-26 Nov 2021) |
| Document date: | 02 Sep 21 |
| Document status: | Adopted by WP.29 |
| Regarding: | |
| Adoption Vote | |
| This proposal (WP.29/2021/107) was adopted by the World Forum. Thirty-eight Contracting Parties out of the 52 applying UN R110 were present for the vote by AC.1. Thirty-seven voted in favor with zero against and one abstaining. | |
| View full document file for more information | |
| Reference Number: | WP.29/2023/78 |
| Meeting Session(s): | 190th WP.29 session (19-22 Jun 2023) |
| Document date: | 28 Apr 23 |
| Document status: | Adopted by WP.29 |
| Regarding: | |
| Adoption Vote | |
| This proposal (WP.29/2023/78) was adopted by the World Forum. Thirty-two Contracting Parties out of the 53 applying UN R110 were present for the vote by AC.1. Thirty-two voted in favor with zero against and zero abstaining. | |
| View full document file for more information | |
Proposal to introduce a minimum opening set pressure of the primary Liquid Natural Gas relief valve, add design qualification tests aligned with ISO 15500-13:2012 and the North American CSA/ANSI PRD 1 (2020), and align provisions with the requirements of ISO15500 and NGV3.1.
| Reference Number: | WP.29/2023/24 |
| Meeting Session(s): | 189th WP.29 session (6-9 Mar 2023) |
| Document date: | 22 Dec 22 |
| Document status: | Adopted by WP.29 |
| Regarding: | |
| View full document file for more information | |
Proposal to introduce options for fulfilling the marking requirements of E-marking to avoid redundancy with other UN Regulations and to permit a smaller E-marking (as currently permitted under UN R67 and R158).
| Reference Number: | WP.29/2024/106 |
| Meeting Session(s): | 194th WP.29 session (11-15 Nov 2024) |
| Document date: | 22 Aug 24 |
| Document status: | Adopted by WP.29 |
| Regarding: | |
| Adoption Vote | |
| This proposal (WP.29/2024/106) was adopted by the World Forum. Thirty-seven Contracting Parties out of the 55 applying UN R110 were present for the vote by AC.1. Thirty-seven voted in favor with zero against and zero abstaining. | |
| View full document file for more information | |
Proposal to introduce options for fulfilling the marking requirements where more than one UN Regulation applies, including the possibility for smaller E-markings, particularly in cases of small components.
| Reference Number: | WP.29/2024/107 |
| Meeting Session(s): | 194th WP.29 session (11-15 Nov 2024) |
| Document date: | 22 Aug 24 |
| Document status: | Adopted by WP.29 |
| Regarding: | |
| Adoption Vote | |
| This proposal (WP.29/2024/107) was adopted by the World Forum. Thirty-seven Contracting Parties out of the 55 applying UN R110 were present for the vote by AC.1. Thirty-seven voted in favor with zero against and zero abstaining. | |
| View full document file for more information | |
Proposal to introduce options for fulfilling the marking requirements of E-marking to avoid redundancy with other UN Regulations (as currently permitted under UN R107) and to permit a smaller E-marking (as currently permitted under UN R67 and R158).
| Reference Number: | WP.29/2024/102 |
| Meeting Session(s): | 194th WP.29 session (11-15 Nov 2024) |
| Document date: | 22 Aug 24 |
| Document status: | WP.29 amended and adopted |
| Regarding: | |
| Adoption Vote | |
| This proposal (WP.29/2024/102), as amended by para. 100, was adopted by the World Forum. Thirty-seven Contracting Parties out of the 55 applying UN R110 were present for the vote by AC.1. Thirty-seven voted in favor with zero against and zero abstaining. | |
| View full document file for more information | |
| Reference Number: | WP.29-194-13/Rev.1 |
| Meeting Session(s): | 194th WP.29 session (11-15 Nov 2024) |
| Document date: | 13 Nov 24 |
| Document status: | Adopted by WP.29 |
| Regarding: | |
| View full document file for more information | |
Proposal to introduce options for fulfilling the marking requirements of E-marking to avoid redundancy with other UN Regulations (as currently permitted under UN R107) and to permit a smaller E-marking (as currently permitted under UN R67 and R158).
| Reference Number: | WP.29/2024/103 |
| Meeting Session(s): | 194th WP.29 session (11-15 Nov 2024) |
| Document date: | 22 Aug 24 |
| Document status: | Adopted by WP.29 |
| Regarding: | |
| Adoption Vote | |
| This proposal (WP.29/2024/103) was adopted by the World Forum. Thirty-seven Contracting Parties out of the 55 applying UN R110 were present for the vote by AC.1. Thirty-seven voted in favor with zero against and zero abstaining. | |
| View full document file for more information | |
Proposal to introduce options for fulfilling the marking requirements of E-marking to avoid redundancy with other UN Regulations (as currently permitted under UN R107) and to permit a smaller E-marking (as currently permitted under UN R67 and R158).
| Reference Number: | WP.29/2024/104 |
| Meeting Session(s): | 194th WP.29 session (11-15 Nov 2024) |
| Document date: | 22 Aug 24 |
| Document status: | Adopted by WP.29 |
| Regarding: | |
| Adoption Vote | |
| This proposal (WP.29/2024/104) was adopted by the World Forum. Thirty-seven Contracting Parties out of the 55 applying UN R110 were present for the vote by AC.1. Thirty-seven voted in favor with zero against and zero abstaining. | |
| View full document file for more information | |
Proposal to introduce options for fulfilling the marking requirements of E-marking to avoid redundancy with other UN Regulations (as currently permitted under UN R107) and to permit a smaller E-marking (as currently permitted under UN R67 and R158).
| Reference Number: | WP.29/2024/105 |
| Meeting Session(s): | 194th WP.29 session (11-15 Nov 2024) |
| Document date: | 22 Aug 24 |
| Document status: | Adopted by WP.29 |
| Regarding: | |
| Adoption Vote | |
| This proposal (WP.29/2024/105) was adopted by the World Forum. Thirty-seven Contracting Parties out of the 55 applying UN R110 were present for the vote by AC.1. Thirty-seven voted in favor with zero against and zero abstaining. | |
| View full document file for more information | |
Proposal to introduce options for fulfilling the marking requirements in cases where more than one UN Regulation applies, including the possibility for smaller E-markings, particularly for smaller components, to clarify the meaning of “set pressure” and its application in the requirement to ensure that the primary LNG relief valve does not open below 1.5 MPa, and to correct references to paragraphs 1.3.2. instead of 3.1.2. and 1.3.1. instead of 3.1.
| Reference Number: | WP.29/2024/108 |
| Meeting Session(s): | 194th WP.29 session (11-15 Nov 2024) |
| Document date: | 22 Aug 24 |
| Document status: | Adopted by WP.29 |
| Regarding: | |
| Adoption Vote | |
| This proposal (WP.29/2024/108) was adopted by the World Forum. Thirty-seven Contracting Parties out of the 55 applying UN R110 were present for the vote by AC.1. Thirty-seven voted in favor with zero against and zero abstaining. | |
| View full document file for more information | |
Proposal from the GRSG task force on Automated Vehicles Regulation Screening to enable application of UN R110 to ADS vehicles, including exemption of vehicles of subcategories X and Y from provisions that concern manual driving controls, and to clarify the provisions for vehicles in case of separate driver´s compartment.
| Reference Number: | GRSG/2025/31 |
| Submitted by: | Netherlands |
| Meeting Session(s): | 130th GRSG session (6-9 Oct) |
| Document date: | 18 Jul 25 |
| Document status: | Formal GR review |
| Regarding: |