GAR | CNG/LNG System Components

Compressed and Liquefied Natural Gas System Components

Series of amendments
Revisions
Contracting Parties
Documents (18 Jul 2025)
Meetings ( 6 Oct 2025)
Notifications (24 Jun 2025)

24 Jun 2025	Entry into force: Original text \| Supplement 10 UN R110 \| Original text \| Supplement 10 Based on WP.29/2024/102 and WP.29-194-13/Rev.1 as adopted during the 194th WP.29 session (11-15 Nov 2024) and 194th WP.29 session (11-15 Nov 2024). 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). Open depositary notification
24 Jun 2025	Entry into force: 01 series of amendments \| Supplement 8 UN R110 \| 01 series of amendments \| Supplement 8 Based on WP.29/2024/103 as adopted during the 194th WP.29 session (11-15 Nov 2024). 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). Open depositary notification
24 Jun 2025	Entry into force: 02 series of amendments \| Supplement 2 UN R110 \| 02 series of amendments \| Supplement 2 Based on WP.29/2024/104 as adopted during the 194th WP.29 session (11-15 Nov 2024). 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). Open depositary notification
24 Jun 2025	Entry into force: 03 series of amendments \| Supplement 3 UN R110 \| 03 series of amendments \| Supplement 3 Based on WP.29/2024/105 as adopted during the 194th WP.29 session (11-15 Nov 2024). 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). Open depositary notification
24 Jun 2025	Entry into force: 04 series of amendments \| Supplement 5 UN R110 \| 04 series of amendments \| Supplement 5 Based on WP.29/2024/106 as adopted during the 194th WP.29 session (11-15 Nov 2024). 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). Open depositary notification
24 Jun 2025	Entry into force: 05 series of amendments \| Supplement 1 UN R110 \| 05 series of amendments \| Supplement 1 Based on WP.29/2024/107 as adopted during the 194th WP.29 session (11-15 Nov 2024). 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. Open depositary notification
24 Jun 2025	Entry into force: 06 series of amendments \| Supplement 1 UN R110 \| 06 series of amendments \| Supplement 1 Based on WP.29/2024/108 as adopted during the 194th WP.29 session (11-15 Nov 2024). 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. Open depositary notification
6 Oct 2023	Entry into force: 06 series of amendments UN R110 \| 06 series of amendments Based on WP.29/2023/24 as adopted during the 189th WP.29 session (6-9 Mar 2023). 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. Open depositary notification
25 Jul 2022	Entry into force: 04 series of amendments \| Supplement 3 UN R110 \| 04 series of amendments \| Supplement 3 Based on WP.29/2021/107 as adopted during the 185th WP.29 session (23-26 Nov 2021). 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. Open depositary notification
25 Jul 2022	Entry into force: 05 series of amendments UN R110 \| 05 series of amendments Based on WP.29/2021/98 as adopted during the 185th WP.29 session (23-26 Nov 2021). 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. Open depositary notification