UN R154 — Supplement 1 to the 02 series of amendments

Appendix 5 to Annex B8 now gives three normalised distances for the utility factor equation: dnea, dneb (2200 km) and dnec (4260 km). Paragraph 2. now applies this equation to OVC-HEVs and OVC-FCHVs of category M1 or N1 with emission characters EA, EB or EC. Paragraph 1. is now “Reserved”; before, it let each Contracting Party develop its own UFs. New paragraph 12.3. applies to Level 1A type approvals for OVC-HEVs and OVC-FCHVs. From 1 January 2025, new types get approvals only with UF-weighted values based on dneb, and from 1 January 2027 only with dnec. Contracting Parties need not accept approvals based on dnea from 1 January 2026, or on dneb from 1 January 2028.

At the option of the manufacturer, coastdowns may now be performed between 1 °C and 40 °C, instead of between 1 °C and 5 °C. In Table A4/2, the RRC ranges of the energy efficiency classes for C1, C2 and C3 tyres change. At the request of the manufacturer, bd and cd can now be set to zero during the coastdown and for calculating fjDyno. Before, this was only for cd. New paragraph 4.4.5. requires that the equations of motion are corrected to reference conditions as specified in paragraph 4.5. Annex B3 now refers to JIS K2258-1,2 and to EN ISO 3015 instead of EN 116.

Text that took CO2 values from step 9 of Table A7/1 or step 8 of Table A8/5 now refers to new tables by level. For Level 1B, these tables use step 6 of Table A7/1 or Table A8/5 for tested vehicles and for vehicles H and L. New text in Annexes B7 and B8 calculates the CO2 emission of an individual vehicle for Level 1B. This calculation is only for the extrapolation criterion in paragraph 2.3.2.3. of Annex B6 or paragraph 4.5.1.1.4. of Annex B8. In the calculation table of Annex B7, the text that applied the run-in factor for conformity of production is deleted.

Paragraph 1.2.3.3. of Annex B6 now says that the declared EAER of OVC-HEVs must not be determined according to Figure A6/1. The declared value is the type approval value if it is less than the calculated EAER. If not, the calculated EAER is the type approval value. In Annex B8, the equation for the phase-specific EAER now has separate text for Level 1A and Level 1B. For Level 1A, the cycle-specific and phase-specific EAER equations use arithmetic averages calculated for all individual charge-depleting tests. The text deletes paragraph 4.5.8., which let the manufacturer decrease the individual EAER value.

In the REESS energy change-based correction procedure of Annex B8, paragraph 3.1.2.1. or 3.2.2.1. must be omitted when consecutive sequences are conducted. For REESS voltage in Annex B8, the manufacturer may use the vehicle on-board REESS voltage measurement data instead of the external measurement in paragraph 3.1. The accuracy of these data must be demonstrated to the responsible authority. The nominal voltage of the REESS must be determined according to IEC 60050-482.

For Type 1 test CoP verification, criteria emissions test results now come from step 5 of Table A7/1, Table A8/5 or Table A8/8. New Table App1/1 shows the procedure for calculating the final CoP test results. The test cycle of the tested vehicle must match the cycle used for its cycle energy demand in cycle class, downscaling and capped speed. In the run-in test procedure, the run-in factor extension to other CoP families now covers CO2, pollutant emissions, fuel efficiency and electric energy consumption. The slope CRI should now be corrected downward with the standard errors of the slope.

The documentation in Annexes Part A no longer refers to the series of amendments which includes Level 2. The addendum to the type approval communication now refers to the 02 series of amendments to UN Regulation No. 154. Paragraph 4.2. no longer asks to include the item 3.2.12.2.7.6. information of Annex A1 in Appendix 1 to the communication. In Annex C5, paragraph 3.2.1.2. now refers to engine coolant temperatures instead of engine temperatures. Engine coolant temperature is only deemed subject to approval if it is used as a substitute to ambient temperature.