Division 2.5.6 Free running test

After completing the tests described in point 2.5.5, the brakes shall be allowed to cool to a temperature representative of a cold brake (i.e. < 100 °C) and it shall be verified that the towed vehicle is capable of free running by fulfilling one of the following conditions:

1. 2.5.6.1.

   Wheels are running freely (i.e. may be rotated by hand);

2. 2.5.6.2.

   It is ascertained that when the towed vehicle is driven at a constant speed of v = 60 km/h 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.