1.4.Type-I test (fade test)
1.4.1.Special provisions
1.4.1.1.The service brakes of all motorcycles (with or without sidecar) and tricycles must be tested by a series of repeated stops, the vehicle being in the laden condition, in accordance with the requirements set out below. For vehicles equipped with a combined braking system, it is sufficient to submit this service braking device to the type-I test.
1.4.1.2.The type-I test is carried out in three parts.
1.4.1.2.1.A single type-0 test as prescribed by 2.1.2 or 2.2.3.1.
1.4.1.2.2.A series of 10 repeated stops carried out in accordance with the requirements of point 1.4.2.
1.4.1.2.3.A single type-0 test, carried out as soon as possible after the completion of the test specified in 1.4.1.2.2 and in any case within one minute thereof, and performed under the same conditions as those used for the test in 1.4.1.2.1, in particular at a control force as constant as possible with a mean value not exceeding the mean force actually used in that test.
1.4.2.Test conditions
1.4.2.1.The vehicle and the brake(s) to be tested must be substantially free from moisture and the brake(s) cold (≤ 100 °C).
1.4.2.2.The initial test speed is:
1.4.2.2.1.for testing the front brake(s), whichever is the lower of 70 % of the vehicle's maximum speed and 100 km/h;
1.4.2.2.2.for testing the rear brake(s), whichever is the lower of 70 % of the vehicle's maximum speed and 80 km/h;
1.4.2.2.3.for testing a combined braking system, whichever is the lower of 70 % of the vehicle's maximum speed and 100 km/h.
1.4.2.3.The distance between the initiation of one stop and the initiation of the next shall be 1 000 metres.
1.4.2.4.The use of the gearbox and/or clutch is as follows:
1.4.2.4.1.In the case of a vehicle with a manual gearbox or an automatic transmission where the gearbox can be disengaged manually, the highest gear, consistent with attaining the initial test speed, must be engaged during the stops.
When the vehicle speed has fallen to 50 % of the initial test speed, the engine must be disengaged.
1.4.2.4.2.In the case of a vehicle with a fully automatic transmission, the test must be carried out under the normal operating conditions for such equipment.
For the approach, the gear suitable to the initial test speed must be used.
1.4.2.5.After each stop, the vehicle must immediately be subjected to maximum acceleration to reach the initial test speed and maintained at that speed until the initiation of the next stop. If appropriate, the vehicle may be turned round on the test track before acceleration.
1.4.2.6.The force applied to the control shall be so adjusted as to maintain a mean deceleration of 3 m/s2 or the maximum deceleration achievable with that brake, whichever is the lower, at the first stop: this force must remain constant throughout the succeeding stops required by 1.4.1.2.2.
1.4.3.Residual performance
1.4.3.1.At the end of the type-I test the residual performance of the service braking device must be measured in the same conditions (and in particular at a control force as constant as possible with a mean value not exceeding the mean force actually used) as for the type-0 test with the engine disconnected (the temperature conditions may be different).
1.4.3.2.This residual performance must not be:
1.4.3.2.1.if expressed as a deceleration, less than 60 % of the deceleration figure achieved during the type-0 test;
or
1.4.3.2.2.if expressed as a stopping distance, more than the stopping distance figure, calculated in accordance with the following formula;
S2 ≤ 1,67 S1 – 0,67 aV
where:
S1
=
the stopping distance achieved in the type-0 test,
S2
=
the stopping distance as recorded in the residual performance test,
a
=
0,1,
V
=
the initial speed at the beginning of braking as defined in 2.1.1 or 2.2.2.