A Two-Stage Stochastic Model for Maintenance and Rehabilitation Planning of Pavements

Table 3

Parameters.

Parameter	Description	Domain
	Large value (a value close to infinity)
	Small value (a value close to zero)
	Pavement financial value of section n at the year t while being in the best condition
	Condition drop from t=1 to the target year of t if no M&R action is performed
	Condition drop from the year of performing M&R action (m) on a pavement section (n) with condition index b to the target year of t
	Initial condition
	Condition improvement
	Lower threshold of condition
	Lower threshold of overall condition
	Upper threshold of condition
	Upper threshold of overall condition
	Allocated budget
	M&R action cost (Operating cost)
	Probability of scenario
	Critical condition in the vehicle operation cost (VOC) vs overall condition curve
	VOC at the critical condition
	VOC at the worst condition (0)
	VOC at the best condition
	Delay cost due to performing M&R actions
	Cost constant to address deference between first and second stage decisions
	Coefficient of condition in overall condition equation
	Deterioration constant in overall condition equation

can be replaced by f, t, s, or r which are, respectively, related to fatigue, thermal distress, skid, or roughness.