The potential risk of climate change increases interest in how it may affect the deterioration rates offlexible pavements and how pavement service lives would be altered as a consequence. Previousstudies demonstrated that temperature is the most influential environmental factor for theMechanistic-Empirical Pavement Design Guide (MEPDG: version 1.1). In this paper, temperaturefactors, both the increase in average annual temperature and seasonal variation in temperature areexamined through a sensitivity analysis. The sensitivity of the pavement performance to temperature,as well as other environmental factors such as precipitation, wind speed, percent sunshine andgroundwater level are also included as a reference. This study concluded that temperature factors,both the increase in average annual temperate and seasonal variation, are the most influential in thepavement performance. Moreover, pavement service life may experience considerable reduction dueto climate change in some regions.
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