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UN Regulation No. 115
Liquefied Petroleum and Compressed Natural Gas Retrofit Systems

Uniform Provisions Concerning the Approval of: I Specific LPG (Liquefied Petroleum Gases) Retrofit Systems to be Installed in Motor Vehicles for the Use of LPG in their propulsion system II. Specific CNG (Compressed Natural Gas) Retrofit Systems to be Installed in Motor Vehicles for the Use of CNG in their propulsion system

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Revisions and Amendments
Series of Amendments and Supplements

Application of the Regulation

Contracting Parties applying UN R115

Related News and Information

3 Jun 2016 3 Jun 2016 | South Korea Unveils Emissions Crackdown To Tackle Smog Korea Republic of Korea Worldwide Harmonized Light Vehicles Test Procedure

This GTR prescribes a test cycle and test procedures to measure the emissions (including off-cycle) and fuel efficiency of light-duty vehicles. The GTR was adopted at the March 2014 session of the World Forum.

A supplemental "phase 1b" is underway to refine certain elements of the initial regulation. WP.29/AC.3 expects to consider a proposal for Amend. 1 to UN GTR No. 15 in November 2016 as result of Phase 1b activities.

A second phase is expected to address low ambient temperature, high altitude test procedures, and possibly durability and conformity issues.

A third phase would eventually include the addition of reference fuels, correlation across existing regional/national cycles, and introduction of emissions limits.

The latest draft version of the amended GTR is regularly updated by the WLTP informal working group.

The regulation is also supplemented by a gearshift calculation tool. WLTP Worldwide Harmonized Light Vehicle Emissions Test Procedure GTR No. 15 GTR No. 15, Uniform provisions concerning the measures to be taken against the emission of gaseous and particulate pollutants from compression-ignition engines and positive ignition engines for use in vehicles Diesel/CNG/LNG Engine Emissions Diesel and CNG/LNG Engine Emissions UN Regulation No. 49 UN R49, Uniform Provisions Concerning the Approval of: I. Specific Equipment of Motor Vehicles Using Liquefied Petroleum Gases in their Propulsion System II. A Vehicle Fitted with Specific Equipment for the Use of Liquefied Petroleum Gases in its Propulsion System with regard to the Installation of such Equipment LPG Equipment Liquefied Petroleum Gas Equipment UN Regulation No. 67 UN R67, Uniform Provisions Concerning the Approval of Vehicles with regard to the Emission of Pollutants According to Engine Fuel Requirements Together with R49, Regulation 83 addresses vehicle emissions. R83 covers emissions from all light vehicles (M1/N1) regardless of engine type and from heavier vehicles only if equipped with a gasoline engine. Under certain circumstances, R83 or R49 can apply to light vehicle CNG/LPG engines as well as to medium passenger and commercial vehicles (M2/N2) equipped with diesel engines. R83 also contains provisions specific to hybrid variations of the vehicles under its purview. Motor Vehicle Emissions Motor Vehicle Emissions UN Regulation No. 83 UN R83, Uniform Provisions Concerning the Approval of Passenger Cars Powered by an Internal Combustion Engine Only, or Powered by a Hybrid Electric Power Train with Regard to the Measurement of the Emission of Carbon Dioxide and Fuel Consumption and/or the Measurement of Electric Energy Consumption and Electric Range, and of Categories M1 and N1 Vehicles Powered by an Electric Power Train Only with Regard to the Measurement of Electric Energy Consumption and Electric Range CO2 Emissions/Fuel Consumption Carbon Dioxide Emissions and Fuel/Energy Consumption UN Regulation No. 101 UN R101, 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. CNG/LNG System Components Compressed and Liquefied Natural Gas System Components UN Regulation No. 110 UN R110, and Uniform Provisions Concerning the Approval of: I Specific LPG (Liquefied Petroleum Gases) Retrofit Systems to be Installed in Motor Vehicles for the Use of LPG in their propulsion system II. Specific CNG (Compressed Natural Gas) Retrofit Systems to be Installed in Motor Vehicles for the Use of CNG in their propulsion system LPG/CNG Retrofit Systems Liquefied Petroleum and Compressed Natural Gas Retrofit Systems UN Regulation No. 115 UN R115

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Development of the Regulation

Pending Changes to UN R115

Latest Documents

31 Jan 2020
UN R115: Proposal for Corrigendum 1 to Supplement 8 | WP.29/2020/49
15 Jan 2020
UN R115 Proposal for a new Corrigendum | GRPE-80-20
27 Aug 2019
UN R115: Proposal for Supplement 9 | WP.29/2019/113
See all 85 related documents

Latest Meeting Discussions

Working Party on Pollution and Energy | Session 81 | 9-12 Jun 2020
Working Party on Pollution and Energy | Session 80 | 14-17 Jan 2020
World Forum for the Harmonization of Vehicle Regulations | Session 179 | 12-14 Nov 2019
See more related meetings