(6)

point 2.3.8.2 is replaced by the following: 2.3.8.2. Determination of the road loads where, for the purpose of the WLTP test, the road loads have been determined in accordance with point 5 of Sub-Annex 4 of Annex XXI to Regulation (EU) 2017/1151. 2.3.8.2.1. Road load matrix family in accordance with point 5.1 of Sub-Annex 4 to Annex XXI to Regulation (EU) 2017/1151. Where the road load of a vehicle has been calculated in accordance with point 5.1 of Sub-Annex 4 to Annex XXI to Regulation (EU) 2017/1151, the NEDC road load to be used as input for the correlation tool simulations shall be determined as follows: (a) NEDC tabulated road load values in accordance with Table 3 of Annex 4a to Regulation UN/ECE No 83 Vehicle H: F 0 n,H = T 0 n,H + (F 0 w,H – Aw,H ) F 1 n,H = F 1 w,H – Bw,H F 2 n,H = T 2 n,H + (F 2 w,H – Cw,H ) Vehicle L: F 0 n,L = T 0 n,L + (F 0 w,L – Aw,L ) F 1 n,L = F 1 w,L – Bw,L F 2 n,L = T 2 n,L + (F 2 w,L – Cw,L ) Where, F 0 n,i , F 1 n,i , F 2 n,i , with i = H,L, are the NEDC road load coefficients for vehicle H or L; T 0 n,i , T 2 n,i , with i = H,L are the NEDC chassis dynamometer coefficients for vehicles H or L determined in accordance with Table 3 of Annex 4a to UN/ECE Regulation No 83; AW,H/L , BW,H/L , CW,H/L are the chassis dynamometer coefficients for the vehicle used for the purpose of the preparation of the chassis dynamometer in accordance with points 7 and 8 of Sub-Annex 4 to Annex XXI to Regulation (EU) 2017/1151; (b) NEDC road loads derived from the representative vehicle In the case of vehicles designed for a technically permissible maximum laden mass equal to or exceeding 3 000 kg, the NEDC road loads may, at the request of the manufacturer, be determined in accordance with the following: (1) Determination of the road load coefficients of the representative vehicle of the road load matrix family (i) Effect of different inertia: Where the factors in the formula are as defined in point 2.3.1, with the exception of the following: F0w,R is the road load coefficient F0 determined for the WLTP test of vehicle R; TMw,R is the WLTP test mass used for the representative vehicle R. (ii) Effect of different tyre pressure: Where the factors in the formula are as defined in point 2.3.5. (iii) Effect of the inertia of rotating parts: In the case of a physical vehicle test, the following formula shall apply: (iv) Effect of different tyre tread depth: Where the factors in the formula are as defined in point 2.3.6. (v) Effect of preconditioning: In the case of a physical vehicle test, the correction for the effect of preconditioning shall not be applied. (vi) The road load coefficient F1n for vehicle R shall be determined as follows: Effect of the inertia of rotating parts: In the case of a physical vehicle test, the following formula shall apply: (vii) The road load coefficient F2n for vehicle R shall be determined as follows: Effect of the inertia of rotating parts: In the case of a physical vehicle test, the following formula shall apply: Where the factor is the road load coefficient F2 determined for the WLTP test of vehicle R from which the effect of all aerodynamic optional equipment has been removed. (2) Determination of the NEDC road load coefficients for vehicle H For the calculation of the NEDC road loads of vehicle H the following formulae shall be used: (i) The F0n,H for vehicle H shall be determined as follows: Where, F0n,R is the constant road load coefficient of vehicle R in N; RMn,H is the reference mass of vehicle H, RMn,R is the reference mass of vehicle R; RRH is the tyre rolling resistance of vehicle H in kg/tonne; RRR is the tyre rolling resistance of vehicle R in kg/tonne; (ii) The F2n,H for vehicle H shall be determined as follows: Where, F2n,R is the second order road load coefficient of vehicle R in N/(km/h)2; Af,H is the frontal area of vehicle H in m2; Af,R is the frontal area of vehicle R in m2. (iii) The F1n,H for vehicle H shall be set to 0. (3) Determination of the NEDC road load coefficient for vehicle L For the calculation of NEDC road loads of vehicle L the following formulae shall be used: (i) The F0n,L for vehicle L shall be determined as follows: Where, F0n,R is the constant road load coefficient of vehicle R in N; RMn,L is the reference mass of vehicle L; RMn,R is the reference mass of vehicle R; RR,L is the tyre rolling resistance of vehicle L in kg/tonne; RRR is the tyre rolling resistance of vehicle R in kg/tonne; (ii) The F2n,L for vehicle L shall be determined as follows: Where, F2n,R is the second order road load coefficient of vehicle R in N/(km/h)2; Af,L is the frontal area of vehicle L in m2; Af,R is the frontal area of vehicle R in m2. (iii) The F1n,L for vehicle L shall be set to 0. 2.3.8.2.2. Default road loads in accordance with point 5.2 of Sub-Annex 4 to Annex XXI to Regulation (EU) 2017/1151 Where default road loads have been calculated in accordance with point 5.2 of Sub-Annex 4 to Annex XXI to Regulation (EU) 2017/1151, the NEDC road loads shall be calculated in accordance with point 2.3.8.2.1.(a) of this Annex. In the case of physical vehicle testing, the test shall be performed with the NEDC chassis dynamometer coefficients for vehicles H or L determined in accordance with Table 3 of Annex 4a to UN/ECE Regulation No 83.’;