Document ID: chunk:federal_register_of_legislation:F2021C00477:body:0:p37
Version: federal_register_of_legislation:F2021C00477
Segment Type: other
Provision Reference: 
Character Range: 98909–101682

corresponding Type-0 test.
 This recovery performance must not be less than 70 per cent, nor more than 150 per cent, of the figure recorded in the Type-0 test with the engine disconnected.
1.5.4.1. For vehicles equipped with an electrical regenerative braking system of category B, the recovery test shall be made with no regenerative braking component, i.e. under the conditions of paragraph 1.5.4. above.
 After the further reconditioning of the linings, a second repeat Type-0 test shall be made from the same speed and with no electric regenerative braking contribution as in the recovery test with the engine/motors disconnected, and comparison shall be made between these test results.
 The recovery performance must not be less than 70 per cent, nor more than 150 per cent of the figure recorded in this final repeat Type-0 test.
2.  Performance of braking systems
2.1. Service braking system
2.1.1. The service brakes shall be tested under the conditions shown in the following table:
(A)  Type-0 test   v     100 km/h
     with engine
     disconnected  s    0.1 v+0.0060 v2  (m)

                   dm   6.43 m/s2
(B)  Type-0 test   v     80% vmax   160 km/h
     with engine   s    0.1 v+0.0067 v2  (m)
     connected     dm   5.76 m/s2

                   f     6.5 - 50 daN

               where:

 v = test speed, in km/h
 s = stopping distance, in metres
 dm = mean fully developed deceleration, in m/s2
 f = force applied to foot control, in daN
 vmax = maximum speed of the vehicle, in km/h
2.1.2. In the case of a motor vehicle authorized to tow an unbraked trailer, the minimum Type-0 performance of the combination shall not be less
than 5.4 m/s2 in both the laden and unladen conditions.
 The combination performance shall be verified by calculations referring to the maximum braking performance actually achieved by the motor vehicle alone (laden) during the Type-0 test with the engine disconnected, using the following formula (no practical tests with a coupled unbraked trailer are required):
 where:
dM+R = calculated mean fully developed deceleration of the motor vehicle when coupled to an unbraked trailer, in m/s2
dM = maximum mean fully developed deceleration of the motor vehicle alone achieved during the Type-0 test with engine disconnected, in m/s2
PM = mass of the motor vehicle (laden)
PR = maximum mass of an unbraked trailer which may be coupled, as declared by the motor vehicle manufacturer.
2.2. Secondary braking system
2.2.1. The performance of the secondary braking system shall be tested by the Type-0 test with the engine disconnected from an initial vehicle speed of 100 km/h and a force applied to the service brake control not less than 6.5 daN and not exceeding 50 daN.
2.2.2. The secondary braking system must give a