Document ID: chunk:federal_register_of_legislation:F2010C00150:front:0:p27
Version: federal_register_of_legislation:F2010C00150
Segment Type: other
Provision Reference: 
Character Range: 73489–76469

performance is admissible,

         2.3.6. To check compliance with the requirement specified in paragraph 5.2.2.4. of this Regulation, a Type-0 test must be carried out, with the engine disconnected, at an initial test speed of 30km/h. The mean fully developed deceleration on application of the control of the parking brake system and the deceleration immediately before the vehicle stops, shall not be less than 1.5m/s2 The test shall be carried out with the laden vehicle. The force exerted on the braking control device shall not exceed the specified values.

3. RESPONSE TIME

         3.1. Where a vehicle is equipped with a service braking system which is totally or partially dependent on a source of energy other than the muscular effort of the driver, the following requirements must be satisfied:

         3.1.1. in an emergency manoeuver, the time elapsing between the moment when the control device begins to be actuated and the moment when the braking force on the least favorable placed axle reaches the level corresponding to the prescribed performance must not exceed 0.6 seconds;

         3.1.2. in the case of vehicles fitted with hydraulic braking systems, the requirements of paragraph 3.1.1. above are considered to be satisfied if, in an emergency manoeuver, the deceleration of the vehicle or the pressure at the least favorable brake cylinder, reaches   a level corresponding to the prescribed performance within 0.6 seconds.
    Annex 4

PROVISIONS RELATING TO ENERGY SOURCES AND ENERGY STORAGE DEVICES (ENERGY ACCUMULATORS)

HYDRAULIC BRAKING SYSTEMS WITH STORED ENERGY

         1. CAPACITY OF ENERGY STORAGE DEVICES (ENERGY ACCUMULATORS)

1.1. General

         1.1.1. Vehicles on which the braking equipment requires the use of stored energy provided by hydraulic fluid under pressure shall be equipped with energy storage devices (energy accumulators) of a capacity meeting the requirements of paragraphs 1.2. or 1.3. of this annex;

         1.1.2. However, the energy storage devices shall not be required to be of a prescribed capacity if the braking system is such that in the absence of any energy reserve it is possible with the service brake control to achieve a braking performance at least equal to that prescribed for the secondary braking system;

         1.1.3. In verifying compliance with the requirements of paragraphs 1.2., l.3. and 2.1. of this annex, the brakes shall be adjusted as closely as possible and, for paragraph 1.2. of this annex, the rate of full-stroke actuations must be such as to provide an interval of at least 60 seconds between each actuation.

         1.2. Vehicles equipped with a hydraulic braking system with stored energy shall meet the following requirements:

         1.2.1. After eight full-stroke actuations of the service brake control, it shall still be possible to achieve, on the ninth application, the performance prescribed for the secondary braking system.

         1.2.2. Testing shall