Over time, the Infracos need to meet progressively more difficult benchmarks of lower Lost Customer Hours (LCH), while the ambience benchmark remains constant in line with the expected delivery of station modernisations. Figure 8 shows how availability performance is incentivised, with payment deductions twice the amount of bonuses for the same amount of variation from benchmark.
| 7 | ASSET CAPABILITY INCENTIVES |
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| The Infracos must deliver higher capability by certain dates, or else incur payment abatements. The chart below shows how the incentives are intended to encourage timely delivery of a line upgrade on the District Line. |
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| Note Figure does not show two smaller capability upgrades - of 1.6 per cent and 2.6 per cent of the base score, which must be delivered by 2012 and 2015 respectively. |
| 8 | INCENTIVES TO IMPROVE AVAILABILITY |
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| Bonuses and abatements are incurred at different levels |
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| Note 1 Overall abatements/bonuses are determined every four weeks Source: National Audit Office, derived from LUL documentation |
| 9 | TUBE PPPS: KEY PERFORMANCE MEASURES AND PAYMENTS |
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| Infraco performance is measured against a range of mainly outcome-specified indicators, and LUL's service charge payments to the Infracos are adjusted according to performance |
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| Source: National Audit Office, derived from LUL documentation |