The trip validity shall be verified in accordance with point 9.2. of Annex IIIA. For the valid trips, the final RDE results are calculated as follows for vehicles with ICE, NOVC-HEV and OVC-HEV.

For the complete RDE trip and for the urban part of the RDE trip (k = t = total, k = u = urban):

M_RDE,k = m_RDE,k · RF_k

The values of the parameter RF_L1 and RF_L2 of the function used to calculate the result evaluation factor are as follows:

• Upon the request of the manufacturer and only for type approvals granted before 1 January 2020,

  RF_L1 = 1,20 and RF_L2 = 1,25;

  in all other cases:

  RF_L1 = 1,30 and RF_L2 = 1,50;

  The RDE result evaluation factors RF_k (k = t = total, k = u = urban) shall be obtained using the functions laid down in point 2.2. for vehicles with ICE and NOVC-HEV, and in point 2.3. for OVC-HEV. These evaluation factors shall be subject to review by the Commission and shall be revised as a result of technical progress. A graphical illustration of the method is provided in Figure App 6.1 below, while the mathetical formulas are found in Table App 6.1:

  Figure App 6.1Function to calculate the result evaluation factor

  

  Table App 6.1
  Result evaluation factors calculation
  When:	Then the Result evaluation factor RFk is:	Where:
  rk ≤ RFL1	RFk = 1
  RFL1 < rk ≤ RFL2	RFk = a1rk + b1	$a_1=\frac{{\mathrm{RF}}_{L2}-1}{\left[{\mathrm{RF}}_{L2}\left({\mathrm{RF}}_{L1}-{\mathrm{RF}}_{L2}\right)\right]}$ b1 = 1 – a1RFL1
  rk > RFL2	${\mathrm{RF}}_k=\frac{1}{r_k}$

The value of the RDE result evaluation factor depends on the ratio r_k between the distance specific CO₂ emissions measured during the RDE test and the distance-specific CO₂ emitted by the vehicle over the WLTP test conducted in accordance with Sub-Annex 6 to Annex XXI of this Regulation, obtained from point 12 of the Transparency list 1 of Appendix 5 of Annex II with interpolation between vehicle H and vehicle L (if relevant) as defined in Sub-Annex 7 of Annex XXI, using Test mass and Road load coefficients (F0, F1 & F2) obtained from the Certificate of Conformity for the individual vehicle as defined in Annex IX. For the urban emissions, the relevant phases of the WLTP driving cycle shall be:

1. a)

   for ICE vehicles the first two WLTP phases, i.e. the Low and the Medium speed phases,

2. b)

   for NOVC-HEVs the whole WLTP driving cycle.

   $r_k=\frac{M_{{\mathrm{CO}}_2\mathrm{,RDE,k}}}{M_{{\mathrm{CO}}_2\mathrm{,WLTP,k}}}$

The value of the RDE result evaluation factor depends on the ratio r_k between the distance-specific CO₂ emissions measured during the RDE test and the distance-specific CO₂ emitted by the vehicle over the WLTP test conducted using the Charge Sustaining mode in accordance with Sub-Annex 6 to Annex XXI of this Regulation, obtained from point 12 of the Transparency list 1 of Appendix 5 of Annex II with interpolation between vehicle H and vehicle L (if relevant) as defined in Sub-Annex 7 of Annex XXI, using Test mass and Road load coefficients (F0, F1 & F2) obtained from the Certificate of Conformity for the individual vehicle as defined in Annex IX. The ratio r_k is corrected by a ratio reflecting the respective usage of the internal combustion engine during the RDE trip and on the WLTP test, to be conducted using the charge sustaining mode. The formula below shall be subject to review by the Commission and shall be revised as a result of technical progress.

For either the urban or the total driving:

$r_k=\frac{M_{{\mathrm{CO}}_2\mathrm{,RDE,k}}}{M_{{\mathrm{CO}}_2\mathrm{,WLTP,k}-\mathrm{CS,t}}}\times \frac{\mathrm{0,85}}{{\mathrm{IC}}_k}$

where IC_k is the ratio of the distance driven either in urban or total trip with the combustion engine on divided by the total urban or total trip distance:

${\mathrm{IC}}_k=\frac{d_{\mathrm{ICE,k}}}{d_{\mathrm{ICE,k}}+d_{\mathrm{EV,k}}}$

With determination of combustion engine operation in accordance with Appendix 4 Paragraph 5.