Document ID: chunk:federal_register_of_legislation:F2014C01109:body:0:p4
Version: federal_register_of_legislation:F2014C01109
Segment Type: other
Provision Reference: 
Character Range: 11698–14799

the 'Service Brake System' measured using the general test conditions of part 6 and the particular test conditions of clause 7.13 must be between the upper and lower boundaries of:
4.1.9.1.                        Figure 1 for each value of 'Control Signal' used, when fully laden; and
4.1.9.2.                        For vehicles not equipped with an 'Antilock System', but fitted with a 'Variable Proportioning Brake System', Figure 2 for each value of 'Control Signal' used, when at 'Lightly Loaded Test Mass 35/..'; and
4.1.9.3.                        For vehicles not equipped with an 'Antilock System', but fitted with a 'Variable Proportioning Brake System', progressively between Figure 2 and Figure 1 for each value of 'Control Signal' used. 'Established Retardation Coefficients' may be determined by calculation for intermediate states of load between 'Lightly Loaded Test Mass 35/..' and fully laden. The calculations must include not less than 5 points and include any critical point.
4.1.9.4.                        Where the vehicle is a variant of a previously tested vehicle and the effects of the changes on braking performance are known by a test conducted on a complete vehicle, a component or a sub-assembly of components, the requirements of this clause can be met by 'Approved' calculations.
4.1.9.5.                        The requirements relating to the figures specified in clauses 4.1.9.1., 4.1.9.2. and 4.1.9.3. are valid for vehicles with only a pneumatic 'Control Line', as well as for vehicles with an additional electric 'Control Line'. In both cases, the reference value (abscissa of the figures) will be the value of the transmitted pressure in the 'Control Line':
(a) For vehicles equipped with a pneumatic 'Control Line' only, this will be the actual pneumatic pressure in the 'Control Line';
(b) For vehicles equipped with an additional electric 'Control Line', this will be the pressure corresponding to the transmitted digital demand value in the electric 'Control Line', according to ISO 11992:2003 including ISO 11992-2:2003 and its Amd.1:2007.
Vehicles equipped with both pneumatic and electric 'Control Lines' shall satisfy the requirements of the figures related to both 'Control Lines'. However, identical braking characteristic curves related to both 'Control Lines' are not required.
4.1.10.                          Where the vehicle has a 'Rated Towing Capacity' of more than 4.5 tonnes, either:
4.1.10.1.                                  the vehicle must have certification which provides for the operation of trailer brakes using air at a positive pressure as described in clause 4.1.9 or
4.1.10.2.                    the 'Manufacturer' must supply to the 'Administrator' sufficient data to allow the vehicle's 'Service Brake System' to be modelled under laden braking conditions.  Provision of the data derived from the tests performed as described by clause 7.13.2 will be considered as sufficient to meet the requirements of this clause.
4.1.10.3.                    Where the vehicle is a variant of a previously tested vehicle and the effects of