Document ID: chunk:federal_register_of_legislation:F2010C00150:front:0:p17
Version: federal_register_of_legislation:F2010C00150
Segment Type: other
Provision Reference: 
Character Range: 45251–48299

guaranteed after twenty consecutive full stroke actuations of the service braking control. During the test, the braking control shall be fully applied for 20 seconds and released for 5 seconds on each actuation. It should be understood that during the above test sufficient energy is available in the energy transmission to ensure full actuation of the service braking system. This requirement shall not be construed as a departure from the requirements of annex 4.

         5.2.20.5. When the battery voltage falls below a value nominated by the manufacturer at which the prescribed service braking performance can no longer be guaranteed and/or which precludes at least two independent service braking circuits from each achieving the prescribed secondary braking performance, the red warning signal specified in paragraph 5.2.21.1.1. shall be activated. After the warning signal has been activated, it shall be possible to apply the service braking control and obtain at least the secondary performance prescribed in paragraph 2.2. of annex 3 to this Regulation. It should be understood that sufficient energy is available in the energy transmission of the service braking system.

         5.2.20.6. If the auxiliary equipment is supplied with energy from the electric control transmission, the supply of the energy shall be sufficient to fulfil the prescribed deceleration values when all the auxiliary equipment is functioning. With the engine running at a speed not greater than 80% of the maximum power speed, the electric control transmission energy reserve shall not be discharged unless the prescribed deceleration values can be reached without the use of electrical energy.  Compliance with this requirement may be demonstrated by calculation or by practical test.

         5.2.20.7. If the auxiliary equipment is supplied with energy from the electric control transmission, the following requirements shall be fulfilled:

         5.2.20.7.1. In the event of a failure in the energy source, whilst the vehicle is in motion, the energy in the reservoir shall be sufficient to actuate the brakes when the control is applied;

         5.2.20.7.2. In the event of a failure in the energy source, whilst the vehicle is stationary and the parking braking system applied, the energy in the reservoir shall be sufficient to actuate the lights even when the brakes are applied.

5.2.21. Brake failure and defect warning signals (general requirements):

         5.2.21.1. Motor vehicles shall be capable of providing optical brake failure and defect warning signals, as follows;

         5.2.21.1.1. A red warning signal, indicating a failure within the vehicle braking equipment which precludes achievement of the prescribed service braking performance and/or which precludes the functioning of at least one of two independent service braking circuits;

         5.2.21.1.2. Where applicable, a yellow warning signal indicating an electrically detected defect within the vehicle braking equipment, which is not indicated by the red warning