Document ID: chunk:federal_register_of_legislation:F2017L01554:body:0:p20
Version: federal_register_of_legislation:F2017L01554
Segment Type: other
Provision Reference: 
Character Range: 58342–61694

the disc or drum;               or

        (b) A thermocouple that is embedded in the friction material.

       2.5. Burnishing procedure

        The vehicle brakes are burnished prior to evaluating performance. This procedure may be completed by the manufacturer:

        (a) Vehicle lightly loaded;

           (b)         Engine disconnected;

 (c) Test speed:

  (i) Initial speed: 50 km/h or 0.8 Vmax, whichever is lower;

  (ii) Final speed: 5 to 10 km/h;

        (d) Brake application:

         (i) Each service brake system control actuated separately;

        (e) Vehicle deceleration:

         (i) Single front brake system only:

          3.0-3.5 m/s2 for vehicle categories L3 and L4;
          1.5-2.0 m/s2 for vehicle categories L1 and L2;

         (ii) Single rear brake system only: 1.5-2.0 m/s2;

         (iii) CBS or split service brake system: 3.5-4.0 m/s2;

        (f) Number of decelerations: 100 per brake system;

        (g) Initial brake temperature before each brake application ≤  100 °C;

            (h) For the first stop, accelerate the vehicle to the initial speed and then actuate the brake control under the conditions specified until the final speed is reached.  Then reaccelerate to the initial speed and maintain that speed until the brake temperature falls to the specified initial value.  When these conditions are met, reapply the brake as specified.  Repeat this procedure for the number of specified decelerations.  After burnishing, adjust the brakes in accordance with the manufacturer's recommendations.

       3. Dry stop test - single brake control actuated

       3.1. Vehicle condition:

        (a) The test is applicable to all vehicle categories;

        (b) Laden:

             For vehicles fitted with CBS and split service brake systems: the vehicle is tested in the lightly loaded condition in addition to the laden condition;

        (c) Engine disconnected.

       3.2. Test conditions and procedure:

        (a) Initial brake temperature: ≥  55 °C and ≤  100 °C;

        (b) Test speed:

              (i) Vehicle categories L1, L2 and L6 : 40 km/h or 0.9 Vmax, whichever is lower;

              (ii) Vehicle categories L3, L4, L5 and L7: 60 km/h or 0.9 Vmax, whichever is lower;

        (c) Brake application:

         (i) Each service brake system control actuated separately;

        (d) Brake actuation force:

         (i) Hand control: ≤  200 N;

                (ii) Foot control: ≤  350 N for vehicle categories L1, L2, L3, L4 and L6;
            ≤  500 N for vehicle category L5 and L7;

            (e) Number of stops: until the vehicle meets the performance requirements, with a maximum of 6 stops;

            (f) For each stop, accelerate the vehicle to the test speed and then actuate the brake control under the conditions specified in this paragraph.

       3.3. Performance requirements

        When the brakes are tested in accordance with the test procedure set out in paragraph 3.2., 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