Division 2.3.4 Free running test
United Kingdom
In the case of tractors equipped with automatic brake adjustment devices, the brakes after completing the tests described in point 2.3.3 shall be allowed to cool to a temperature representative of a cold brake (i.e. ≤ 100 °C) and it shall be verified that the vehicle is capable of free running by fulfilling one of the following conditions:
- 2.3.4.1.
Wheels are running freely (i.e. may be rotated by hand);
- 2.3.4.2.
F1It is ascertained that when the vehicle is driven at a constant speed of v = 60 km/h or the maximum design speed of the towed vehicle, whichever is the lower, with the brakes released the asymptotic temperatures shall not exceed a drum/disc temperature increase of 80°C, then the residual brake moments are regarded as acceptable.