Document ID: chunk:federal_register_of_legislation:F2024L00446:reg:02:p1
Version: federal_register_of_legislation:F2024L00446
Segment Type: reg
Provision Reference: reg 02 (pt 1/3)
Character Range: 541024–544070

02    Harmonized

                     Annexes Part B
              The annexes in Annexes Part B describe the procedures for determining the levels of emissions of gaseous compounds, particulate matter, particle number, CO2 emissions, fuel consumption, electric energy consumption and electric range from light-duty vehicles.

Annex B1

Worldwide light-duty test cycles (WLTC)
              1. General requirements
               The cycle to be driven depends on the ratio of the test vehicle's rated power to mass in running order minus 75 kg, W/kg, and its maximum velocity,  (as defined in paragraph 3.7.2. of this Regulation).
               The cycle resulting from the requirements described in this annex shall be referred to in other parts of this Regulation as the "applicable cycle".
              2. Vehicle classifications
              2.1. Class 1 vehicles have a power to mass in running order minus 75 kg ratio  W/kg.
              2.2. Class 2 vehicles have a power to mass in running order minus 75 kg ratio > 22 but ≤ 34 W/kg.
              2.3. Class 3 vehicles have a power to mass in running order minus 75 kg ratio > 34 W/kg.
              2.3.1. Class 3 vehicles are divided into 2 subclasses according to their maximum speed, vmax.
              2.3.1.1. Class 3a vehicles with vmax < 120 km/h.
              2.3.1.2. Class 3b vehicles with vmax ≥ 120 km/h.
              2.3.2. All vehicles tested according to Annex B8 shall be considered to be Class 3 vehicles.
              3. Test cycles
              3.1. Class 1 cycle
              3.1.1. A complete Class 1 cycle shall consist of a low phase (Low1), a medium phase (Medium1) and an additional low phase (Low1).
              3.1.2. The Low1 phase is described in Figure A1/1 and Table A1/1.
              3.1.3. The Medium1 phase is described in Figure A1/2 and Table A1/2.
              3.2. Class 2 cycle
              3.2.1. For Level 1A;
              A complete Class 2 cycle shall consist of a low phase (Low2), a medium phase (Medium2), a high phase (High2) and an extra high phase (Extra High2).
              For Level 1B;
              A complete Class 2 cycle shall consist of a low phase (Low2), a medium phase (Medium2) and a high phase (High2).
              3.2.2. The Low2 phase is described in Figure A1/3 and Table A1/3.
              3.2.3. The Medium2 phase is described in Figure A1/4 and Table A1/4.
              3.2.4. The High2 phase is described in Figure A1/5 and Table A1/5.
              3.2.5. The Extra High2 phase is described in Figure A1/6 and Table A1/6.
              3.3. Class 3 cycle
              Class 3 cycles are divided into 2 subclasses to reflect the subdivision of Class 3 vehicles.
              3.3.1. Class 3a cycle
              3.3.1.1. For Level 1A;
              A complete Class 3a cycle shall consist of a low phase (Low3), a medium phase (Medium3a), a high phase (High3a) and an extra high phase (Extra High3).
              For Level 1B;
              A complete Class 3a cycle shall consist of a low