Abstract
This chapter first indicates the importance of road networks as regional, state and national assets. It then considers road pavement structures and pavement design methods, including consideration of temperature impacts and water penetration. Mathematical modelling of road pavement performance is described, and used to indicate how climate change factors could be incorporated in performance evaluation and therefore influence both design methods and maintenance regimes for road systems. Temperature and rainfall are the main factors included in the performance models. A climate variable representing temperature and rainfall – the Thornthwaite Moisture Index – has been shown to provide a useful representation of climate in the performance assessment of road pavements. Other factors related to extreme weather events (e.g., storms, flooding and washouts) also have to be considered. These weather events may also lead to restrictions on traffic operations, for periods of hours to weeks, depending on the level and extent of damage. Road agencies and operators then have to have plans and procedures to deal with these disruptions. This chapter includes case studies as illustrations of emerging practice.
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