1.  Calculating Network Condition Index at Road Section Level

1.1  NCImain in respect of a Road Section Length ("[RSL]") on the Strategic Route & [Main Distributor Network] is calculated in accordance with the following formula:

NCImain = PCImain+ SRImain + SCImain

where:

PCImain is calculated in accordance with paragraph 3;

SRImain is calculated in accordance with paragraph 4; and

SCImain is calculated in accordance with paragraph 5

Table 11.1 sets out examples of combinations of these 3 indices which can be used to produce the NCImain.

1.2  NCIsec in respect of a Road Section Length on the Secondary Distributor Network is calculated in accordance with the following formula:

NCIsec = SRIsec + SCIsec

where:

SRIsec is calculated in accordance with paragraph 4; and

SCIsec is calculated in accordance with paragraph 5;

Table 11.2 sets out examples of combinations of these 2 indices which can be used to produce the NCIsec.

1.3  NCIlink in respect of a Road Section Length on the Link Road Network is calculated in accordance with the following formula:

NCIlink = SRIlink + SCIlink

where:

SRIlink is calculated in accordance with paragraph 4; and

SCIlink is calculated in accordance with paragraph 5;

Table 11.3 sets out examples of combinations of these 2 indices which can be used to produce the NCIlink.

1.4  NCIlocal is calculated in respect of a Road Section Length on the [Local Access Road Network] in accordance with the following formula:

NCIlocal = SRIlocal + SCIlocal

where:

SRIlocal is calculated in accordance with paragraph 4; and

SCIlocal is calculated in accordance with paragraph 5

Table 11.4 sets out examples of combinations of these 2 indices which can be used to produce the NCIlocal.

1.5  General Assumptions for each NCI Calculation

1.5.1  Where an [RSL] or part thereof has been the subject of any works pursuant to Performance Standard 1 of this Contract, the Service Provider shall be deemed to have achieved the maximum score for PCI and/or [SRI] (as the case may be in relation to the nature of the works undertaken) in relation to that [RSL], for a period of two (2) years from the date of completion of such works, as notified by the Service Provider or the Independent Certifier (as the case may be in accordance with the provisions of this Contract) to the Authority and each score allocated to all indices (PCI, SCI, [SRI]) shall be calculated to 2 decimal places.

1.5.2  Where data is not available for any or all of the indices (PCI, SCI, [SRI]) in respect of any [RSL], then the simple arithmetic mean of all available data for the relevant index in the Network Route Hierarchy of the relevant [RSL] shall be used for the purposes of calculating a [District] NCI as the case may be.

1.5.3  Where total unsurveyed length exceeds 3% of the total length of the Road Section Lengths as set out in the Network Model, the [District] must be re-surveyed and the data produced as a result of this survey must be used in the NCI calculation.