Division 5.2.2 The default road load force shall be calculated using the following equation:

F_{c} = f_{0} + f_{1} \times v + f_{2} \times v^{2}

where:

F_c

is the calculated default road load force as a function of vehicle velocity, N;

f₀

is the constant road load coefficient, N, defined by the following equation:

f_{0} = 0,140 \times TM;

F1f₁

is the first order road load coefficient, N/(km/h), and shall be set to zero;

f₂

is the second order road load coefficient, N/(km/h)², determined using the following equation:

$f_{2} = (2,8 \times 10^{- 6} \times TM) + (0,0170 \times width \times height);$

is vehicle velocity, km/h;

test mass, kg;

width

vehicle width as defined in 6.2. of Standard ISO 612:1978, m;

height

vehicle height as defined in 6.3. of Standard ISO 612:1978, m.

Annotations

F1: Substituted by Commission Regulation (EU) 2018/1832 of 5 November 2018 amending Directive 2007/46/EC of the European Parliament and of the Council, Commission Regulation (EC) No 692/2008 and Commission Regulation (EU) 2017/1151 for the purpose of improving the emission type approval tests and procedures for light passenger and commercial vehicles, including those for in-service conformity and real-driving emissions and introducing devices for monitoring the consumption of fuel and electric energy (Text with EEA relevance).