Page 43 - TBIS_15194-2019_(EN)_3nd

TBIS 15194:2019

operating force is fully applied.
2) Testing under wet conditions

The method shall be as given in 4.3.5.9.5.6 c) 1) with the addition that wetting of the

brake system shall commence not less than 5,0 s before the commencement of
braking and shall continue until the measurement period has ended.

Water nozzles shall be arranged according to Figure 8.

d) Correction of braking force

Each recorded braking force, F Br rec, shall be corrected for any difference between the
recorded operating force and the intended operating force. The corrected braking
force shall be calculated by multiplying the recorded braking force, F Br rec, with a

correction factor which is the ratio between the intended operating force, F Op intend,
and the recorded operating force, F Br rec.

EXAMPLE

Recorded braking force F Br rec = 225 N

Intended operating force F Op intend = 180 N

Recorded operating force F Op rec = 184 N

Correction factor = 180/184

Corrected braking force F Br corr = 225 × (180/184)

e) Test results

Select from the record the maximum output braking force, FBr max, for each
combination of wheel (front or rear) and each test condition (wet or dry).

The braking performance value shall be calculated using the following equation:

where
B p is the braking performance value（N）；
F Br max is the maximum FBr average（N）；
m is the reference mass of EPAC defined as 100 kg for adult bicycle; 60 kg for young adult
bicycles；
M is the maximum permissible total mass specified by the manufacturer if in excess of 100
kg in 6 n) (kg);
Where a manufacturer specifies that his EPAC can carry a mass such that the sum of that
mass plus the mass of EPAC is in excess of 100 kg(60 kg for young adult bicycles）to some

value M, apply M as total weight.

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