Implementing a State PMSby George B. Way, Arizona Dep of Transportation,
Document Type: Proceeding Paper
Part of: Engineering 21st Century Highways
Abstract: Arizona State Pavement Management System (PMS) is described in this paper. Experience shows that many factors must be considered in deciding how to maintain a particular mile of the road including its altitude, average temperature, moisture conditions, structural properties, and traffic density. The central question is how poor should each road segment be before it is repaired and which of the many possible repair actions should be taken. The implementation of the pavement management system to solve this problem resulted in a savings of million dollars. The heart of the Arizona Pavement Management System is an optimization model, termed the Network Optimization System (NOS). It recommends preservation policies that achieve standards for road conditions at the lowest possible cost. NOS is based on formulating the problem as a constrained Markov decision process that captures the dynamic and probabilistic aspects of the pavement management problem. Linear programming is used to find the optimal solution.
Subject Headings: Systems management | Pavements | Optimization models | Highways and roads | Highway and road conditions | Computer programming | Markov process | Arizona | North America | United States
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