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The main objective of the Action is the definition of uniform European performance indicators and indexes for road pavements taking the needs of road users and road operators into account.

A quantitative assessment of individual performance indicators provides guidance regarding present and future needs in road pavement design and maintenance at both the national and the European levels. By specifying limits and acceptance values (e.g. target values, alert values, threshold values, etc.) for individual performance indicators minimum standards can be laid down for both projected and existing road pavements. Performance indicators should be defined for different types of pavement structures and road categories.

A further objective is the grouping of these individual performance indicators or indexes into representative combined performance indexes as

Functional performance indexes (demands made on road pavements by road users)
Structural performance indexes (structural demands to be met by the road pavement)
Environmental performance indexes (demands made on road pavements from an environmental perspective)


Finally, based on the combined performance indexes a global performance index will be defined for describing the overall condition of the road pavements, which can be used for general optimisation procedures.