Specifications

Brake assessment manual Ver 1.0 Published October 2013 43 (48 pages)
Test K: Type-I Heating procedure
[Based on: ADR 31/01, Appendix A, Annex 3, Clause 1.5.1.]
This test is intended to heat the brakes until the onset of fade to verify the brakes can
function when hot.
The service Brakes of all vehicles shall be tested by successively applying and releasing the
Brakes until the onset of fade but not more than 15 times, with the vehicle in the MLTM
condition. The speed of the vehicle shall be reduced from 80 km/h to 40 km/h, with 45
seconds between the start of each braking cycle, i.e. the time elapsing between the initiation
of one brake application and the initiation of the next.
If the characteristics of the vehicle make it impossible to abide by the prescribed braking
cycle, the duration may be increased; in any event, in addition to the time necessary for
braking and accelerating the vehicle, a period of 10 seconds must be allowed in each cycle
for stabilizing the speed at 80 km/h.
In these tests, the force applied to the Control must be so adjusted as to attain a mean
deceleration of 3 m/s
2
during every brake application; two preliminary tests may be carried
out to determine the appropriate Control force.
During brake applications, the highest gear ratio (excluding overdrive, etc.) must be
continuously engaged.
For regaining speed after braking, the gearbox must be used in such a way as to attain a
speed of 80 km/h in the shortest possible time (maximum acceleration allowed by the engine
and gearbox).
For electric vehicles not having a sufficient autonomy to carry out the cycles of heating, the
tests shall be carried out by respecting speed during the first braking application then by
using the maximum acceleration of the vehicle, and brake successively at the speed reached
at the end of each 45 seconds cycle duration.