Document ID: chunk:federal_register_of_legislation:F2017L01554:body:0:p31
Version: federal_register_of_legislation:F2017L01554
Segment Type: other
Provision Reference: 
Character Range: 91725–95607

disabled.

       11.3. Performance requirements

        When the brakes are tested in accordance with the test procedure set out in paragraph 11.2., the stopping distance shall be as specified in column 2 or the MFDD shall be as specified in column 3 of the following table:

       Column 1                           Column 2                                                                                                            Column 3
 Vehicle                            STOPPING DISTANCE(S)                                                                                                      MFDD
       Category                    (Where V is the specified test speed in km/h and S is the required stopping distance in metres)
       Single brake system
       L1                                 S ≤  0.1 V + 0.0143 V2                                                                                              ≥  2.7 m/s2
       L2 and L6                          S ≤  0.1 V + 0.0143 V2                                                                           ≥  2.7m/s2
       L3                                 S ≤  0.1 V + 0.0133 V2                                                                           ≥  2.9m/s2
       L4                                 S ≤  0.1 V + 0.0105 V2                                                                                              ≥  3.6m/s2
       Vehicles with CBS or SSBS
       ALL                                S ≤  0.1 V + 0.0154 V2                                                                                              ≥  2.5 m/s2

        Note that if the power assistance may be activated by more than one control, the above performance shall be achieved when each control is actuated separately.

       12. CBS failure test

       12.1. General information:

         (a)   This test will only apply to vehicles fitted with CBS of which the separate service brake systems share a common hydraulic or common mechanical transmission;

         (b)   The test is to confirm the performance of the service brake systems in the event of a transmission failure. This can be demonstrated by a common hydraulic hose or mechanical cable failure.

       12.2. Test conditions and procedure:

         (a)   Alter the brake system to produce a failure causing a complete loss of braking in the portion of the system which is shared;

         (b)   Perform the dry stop test specified in section 3. in the laden condition. Other conditions to be observed are sections 3.1.(c) and 3.2.(a), (b), (d), (e) and (f). Instead of the provisions in section 3.2.(c), only apply the control for the brake not affected by the simulated failure.

       12.3. Performance requirements

        When the brakes are tested in accordance with the test procedure set out in paragraph 12.2., the stopping distance shall be as specified in column 2 or the MFDD shall be as specified in column 3 of the following table:

       Column 1                     Column 2                                          Column 3
       Vehicle                      STOPPING DISTANCE (S)
       category              (Where V is the specified test speed in km/h and         MFDD
                             S is the required stopping distance in metres)
Front wheel(s) braking only
L1                           S ≤  0.1 V + 0.0111 V2                                   ≥  3.4 m/s2
L2 and L6                    S ≤  0.1 V + 0.0143 V2                                   ≥  2.7 m/s2
L3                           S ≤  0.1 V + 0.0087 V2                                   ≥  4.4 m/s2
L4                           S ≤  0.1 V + 0.0105 V2                                   ≥  3.6 m/s2
L5 and L7                    S ≤  0.1 V + 0.0117 V2                                   ≥  3.3 m/s2
Rear wheel(s) braking only
L1                           S ≤  0.1 V