ANNEX VIII Requirements applying to the testing of inertia braking systems, braking devices and trailer braking couplings and of vehicles fitted with them as regards braking
4. Requirements for control devices
4.5.The maximum tractive force D2 shall be not less than 0,1 g · G′A and not more than 0,5 g · G′A.
In the case of vehicles of class B, also the condition D2 ≥ 1 750 N + 0,05 g · G′A is permitted as long as D2 ≤ 0,5 g · G′A.