3.3.1  General Assumptions

3.3.1.1  where two (2) or more data readings exist in any subsection in respect of the same lane on any Road Section Length then the lower data reading will be used in the PCI calculation;

3.3.1.2  where two (2) directional data exists in any subsection in respect of any given [RSL], the simple arithmetic mean of the values in each direction will be used in the PCI calculation;

3.3.1.3  where total unsurveyed length exceeds 7% of the length of the relevant Road Section Length as set out in the Network Model, the [RSL] must be re-surveyed and the data produced as a result of this survey must be used in the PCI calculation.  This re-survey may be carried out at specific points where data has been missed provided that such specific points can be accurately re-established and demonstrated to the Authority.  If the Authority is not (in its absolute discretion) satisfied with such re-establishment then the entire [RSL] shall be re-surveyed;

3.3.1.4  where the survey undertaken in accordance with paragraph 3.1 reveals that the length of the relevant [RSL] is more than 5%, but less than 10% over or under the length for that [RSL] recorded in the Network Model, then, provided that the Service Provider can demonstrate the accuracy of its measurement to the satisfaction of the Authority then the Service Provider shall amend the Network Model accordingly and the existing survey data shall be used in the PCI calculation; and

3.3.1.5  where the survey undertaken in accordance with paragraph 4.1 reveals that the length of the relevant [RSL] is 10% or more over or under the length for that [RSL] recorded in the Network Model, then the [RSL] shall be re-surveyed.  Where the Service Provider can demonstrate the accuracy of its original [RSL] length measurement via the re-survey to the satisfaction of the Authority then the Service Provider shall amend the Network Model accordingly and the data from the re-survey shall be used in the PCI calculation.