UN R110 Supplement 1 (05 series) · UNECE Regulation No. 110 (ECE R110) — Uniform provisions concerning the approval of: I. Specific components of motor vehicles using compressed natural gas (CNG) and/or liquefied natural gas (LNG) in their propulsion system II. Vehicles with regard to the installation of specific components of an approved type for the use of compressed natural gas (CNG) and/or liquefied natural gas (LNG) in their propulsion system.
UN R110 — Supplement 1 to the 05 series of amendments
Base text → Supplement 1
- What changed
- New paragraph 7.4.3. covers a component that conforms to a component type approved under one or more other UN Regulations. In that case, if the same country has granted the different approvals, the symbol of paragraph 7.4.1. need not be repeated for that country.
- Annex 2A now has a new Example 2 for paragraph 7.4.3., with one approval mark under UN Regulation No. 110 and UN Regulation No. 10.
- Example 1 in Annex 2A now gives approval number 052439 and the 05 series of amendments, and states “a ≥ 5 mm.”.
- Why
- Placing two or more distinct UN approval marks on one component is complex and burdensome, especially for small size components.
- The proposal aims at regulatory harmonization by extending the marking options of UN Regulations Nos. 67, 107 and 158 to UN Regulation No. 110.
- In particular, the E-Marking is not duplicated when more than one UN Regulation applies to one component, and its dimension is reduced for small components.
Q1What changed15 changes
Symbol of paragraph 7.4.1. need not be repeated for the same country (para. 7.4.3.)
New paragraph 7.4.3. covers a component that conforms to a component type approved under one or more other UN Regulations. In that case, if the same country has granted the different approvals, the paragraph 7.4.1. symbol need not be repeated for that specific country. The Regulation and approval numbers and additional symbols of all Regulations under which that country granted approval must then go in rows to its right. The symbol of paragraph 7.4.1. is a circle surrounding the letter “E” followed by the distinguishing number of the country which has granted approval. Before this supplement, the Regulation had no paragraph 7.4.3.
Annex 2A, Example 1: approval number 052439 and the 05 series of amendments
Annex 2A now has the heading “Example 1” for the approval mark example that refers to paragraph 7.2. The Example 1 figure is replaced by a new figure that shows “110R-052439 "L"” (or “M” or “C”). Annex 2A now states “a ≥ 5 mm.” for this approval mark. The explanation of this mark now gives approval number 052439 and the 05 series of amendments, instead of 032439 and the 03 series. It now also says “UN Regulation No. 110” instead of “Regulation No. 110”.
Annex 2A, Example 2: one approval mark under UN Regulation No. 110 and UN Regulation No. 10 (para. 7.4.3.)
New “Example 2” in Annex 2A refers to paragraph 7.4.3. and has a new approval mark figure. Its explanation says that the component has been approved in Italy (E 3) pursuant to UN Regulation No. 110 and UN Regulation No. 10. The first two digits of the first approval number refer to the 05 series of amendments to UN Regulation No. 110. The first two digits of the second approval number refer to the 06 series of amendments to UN Regulation No. 10. Example 2 also states “a ≥ 5 mm.” and explains the letters “L”, “M” and “C”. A new footnote says: “This number is given merely as an example.”
Q2Why it changed
- Proposed by
- Expert from the European Association of Automotive Suppliers (CLEPA)
- Working party
- GRSG, 127th session (April 2024)
Reasons
Vehicle components are often in the scope of more than one UN Regulation. Placing two or more distinct UN approval marks on one component is complex and burdensome, especially for small size components.
Sources (2)
“Vehicle components are often in the scope of more than one UN Regulation.”
“Placing two or more distinct UN approval marks on one component is complex and burdensome, especially for small size components.”
UN Regulation No. 107 specifically allows different options to fulfil the marking requirements in cases where more than one Regulation applies. UN Regulations No. 67 and No. 158 allow a minimum E-Marking size of 5 mm.
Sources (2)
“UN Regulation No. 107 specifically allows different options to fulfil the marking requirements in cases where more than one Regulation applies”
“UN Regulations No. 67 and No. 158 allow a minimum E-Marking size of 5 mm.”
This flexibility is particularly relevant and necessary for small components with very limited surface for regulatory marking, for example valves and sensors. The proposal says that such flexibility is not included in UN Regulation No. 110.
Sources (2)
“The flexibility provided by these UN Regulations is particularly relevant and necessary in the case of small components with very limited surface available where to print regulatory marking (e.g. valves, sensors).”
“However, such flexibility is not included in UN Regulation No. 110.”
The proposal aims at regulatory harmonization by extending the marking options of UN Regulations Nos. 67, 107 and 158 to UN Regulation No. 110. In particular, the E-Marking is not duplicated when more than one UN Regulation applies to one component (the so-called “Twin Marking”). Also, the dimension of the E-Marking is reduced to address the limited space of small size components.
Sources (3)
“The proposal aims to achieve regulatory harmonization in terms of the options available to fulfil marking requirements by extending the options provided by UN Regulations Nos. 67, 107, 158 to UN Regulation No. 110”
“in the case when more than one UN Regulation applies to one component, then the E-Marking is not duplicated (i.e. allow the so-called "Twin Marking");”
“the dimension of the E-Marking is reduced to address the limited space of small size components.”
Document trail
- 2024-01ProposalECE/TRANS/WP.29/GRSG/2024/14Proposal submitted by the expert from CLEPA
- —Working party adoptsECE/TRANS/WP.29/GRSG/106Session report, para. 28: GRSG adopted all the proposals, not amended
- 2024-08Sent to WP.29ECE/TRANS/WP.29/2024/107Text that GRSG sent to WP.29 and AC.1
- 2024-11WP.29 adoptsECE/TRANS/WP.29/1181Adopted at the 194th session (session report, para. 158)
- 2025-06-12In forceC.N.318.2025.TREATIES-XI.B.16.110UN depositary notification
Q3Who is affected
Vehicle manufacturer
- No direct action for this role.
Component supplier
- Check if paragraph 7.4.3. lets you show the paragraph 7.4.1. symbol once on components with approvals from the same country.
- In a paragraph 7.4.3. case, place Regulation and approval numbers and additional symbols in rows right of the 7.4.1. symbol.
- Compare the size of your approval marks with “a ≥ 5 mm.” in the Annex 2A examples.
Technical service / Approval authority
- Be ready for component marks under paragraph 7.4.3. that give one 7.4.1. symbol for approvals from the same country.
See every change side by side
RegVault customers compare every version of UN regulations, read the consolidated text and download the PDF.
ⓘ This report gives advice only. It is not legal or type-approval advice.