4.6.2. Proposal for Supplement 3 to the 07 series of amendments to UN Regulation No. 49 (Emissions of compression ignition and positive ignition (LPG and CNG) engines)
UN R49: Proposal for a Supplement 3 to the 07 series of amendments
Reference Number: WP.29/2025/94
Proposal to introduce new provisions to accommodate type-approval of hydrogen Type 1A dual fuel engines and vehicles, modifications to include Fourier Transform Infrared (FTIR) and Quantum Cascade Laser (QCL) instruments, new provisions to accommodate monitoring on-board fuel and/or energy consumption during PEMS testing, and to amend for consistency between UN R49 and UN R83 in light of amendments to the 06 and 07 series of UN R83.