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Reference.org
Pavement performance modeling
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<p>Pavement performance modeling or pavement deterioration modeling is the study of <a href="/facts/Road_surface/m80ermWq">pavement</a> <a href="/facts/Deterioration_modeling/5RgGTlnu">deterioration</a> throughout its life-cycle. The health of pavement is assessed using different performance indicators. Some of the most well-known performance indicators are <a href="/facts/Pavement_Condition_Index/deUFWyre">Pavement Condition Index</a> (PCI), <a href="/facts/International_Roughness_Index/JEA17jFc">International Roughness Index</a> (IRI) and <i><a href="/facts/Present_Serviceability_Index/AJJQv6Pa">Present Serviceability Index</a></i> (PSI), but sometimes a single distress such as <a href="/facts/Rut_(roads)/LlD0rznw">rutting</a> or the extent of <a href="/facts/Pavement_cracking/8tuILB58">crack</a> is used. Among the most frequently used methods for pavement performance modeling are mechanistic models, mechanistic-empirical models, survival curves and <a href="/facts/Markov_model/Mlndun4Q">Markov models</a>. Recently, <a href="/facts/Machine_learning/e0w0XJTu">machine learning</a> algorithms have been used for this purpose as well. Most studies on pavement performance modeling are based on <a href="/facts/International_Roughness_Index/JEA17jFc">IRI</a>. </p>