Document ID: chunk:federal_register_of_legislation:F2010C00150:front:0:p36
Version: federal_register_of_legislation:F2010C00150
Segment Type: other
Provision Reference: 
Character Range: 97083–100007

anti-lock function, as indicated by the above-mentioned yellow warning signal, the subsequent service braking performance must not be less than 80% of the prescribed performance according to the Type-0 test with the engine disconnected. This corresponds to a stopping distance of 0.1v + 0.0075v2 (m) and a mean fully developed deceleration of 5.15m/s2.

         4.3. The operation of the anti-lock system must not be adversely affected by magnetic or electrical fields. [4/](This shall be demonstrated by compliance with Regulation No. 10, 02 series of amendments. )

         4.4. A manual device may not be provided to disconnect or change the control mode [5/]of the anti-lock system.

5. SPECIAL PROVISIONS

5.1. Energy consumption

          Vehicles equipped with anti-lock systems must maintain their performance when the service braking control device is fully applied for long periods. Compliance with this requirement shall be verified by means of the following tests:

5.1.1. Test procedure

         5.1.1.1. The initial energy level in the energy storage device(s) shall be that specified by the manufacturer. This level shall be at least such as to ensure the efficiency prescribed for service braking when the vehicle is laden. The energy storage device(s) for pneumatic auxiliary equipment must be isolated.

         5.1.1.2. From an initial speed of not less than 50km/h, on a surface with a coefficient of adhesion of 0.3 [6/]or less, the brakes of the laden vehicle shall be fully applied for a time t, during which time the energy consumed by the indirectly controlled wheels shall be taken into consideration and all directly controlled wheels must remain under control of the anti- lock system.

         5.1.1.3. The vehicle's engine shall then be stopped or the supply to the energy transmission storage device(s) cut off.

         5.1.1.4. The service braking control shall then be fully actuated four times in succession with the vehicle stationary.

         5.1.1.5. When the brakes are applied for the fifth time, it must be possible to brake the vehicle with at least the performance prescribed for secondary braking of the laden vehicle.

5.1.2. Additional requirements

         5.1.2.1. The coefficient of adhesion of the road surface shall be measured with the vehicle under test, by the method described in paragraph 1.1. of appendix 2 to this annex.

         5.1.2.2. The braking test shall be conducted with the engine disconnected and idling, and with the vehicle laden.

5.1.2.3. The braking time t shall be determined by the formula:

 (but not less than 15 seconds)

          where t is expressed in seconds and vmax represents the maximum design speed of the vehicle expressed in km/h, with an upper limit of 160km/h.

         5.1.2.4. If the time t cannot be completed in a single braking phase, further phases may be used, up to a maximum of four in all.

         5.1.2.5.