Ranking and Optimization Methodologies

Ranking and Optimization Methodologies
Author:
Publisher:
Total Pages: 120
Release: 1987
Genre:
ISBN:

Papers presented at this session include: recent developments and potential future directions in ranking and optimization procedures for pavement management (cook, wd and lytton, rl); sample size selection (scullion, t, lytton, rl and templeton, cj); the economic optimization of pavement maintenance and rehabilitation policy (markow, mj, brademeyer, bd and sherwood, j); achieving efficiency in planning and programming through network-level policy optimization and pavement management (paterson, wdo and fossberg, pe); a dynamic programming approach to optimization for pavement management systems (feighan, kj, shahin, my and sinha, kc); a decomposition approach for rehabilitation and maintenance programming (gendreau, m); a computationally efficient system for infrastructure management with application to pavement management (nesbitt, dm and sparks, ga); a micro-computer markov dynamic programming system for pavement management in finland (thompson, pd, neumann, la and miettinen, m). for the covering abstract of the conference see irrd 807044.

Evaluation and Development of Pavement Scores, Performance Models and Needs Estimates

Evaluation and Development of Pavement Scores, Performance Models and Needs Estimates
Author:
Publisher:
Total Pages: 0
Release: 2011
Genre: Pavements
ISBN:

This report documents the results of two completed Phase I tasks for the project titled, "Evaluation and Development of Pavement Scores, Performance Models and Needs Estimates". These tasks involved a literature review and a review of the current Texas Pavement Management Information System (PMIS) score process. The objective of the project is to develop improvements to PMIS to meet the needs of the Texas Department of Transportation (TxDOT). The project is split into three phases. Phase I involves a review of the current PMIS and recommendations for modifying and improving analytical processes in the system. Phase II involves developing pavement performance models for the system. Finally, Phase III involves developing improved decision trees for the system's needs estimate process. The first project task involved developing a synthesis on how states define and measure pavement scores: that synthesis was published in February 2009. The other Phase I tasks for this project are currently ongoing; the results of all remaining tasks will be documented in the final report for this project.

The Development of a Conceptual Framework for a District 4-year Pavement Management Plan

The Development of a Conceptual Framework for a District 4-year Pavement Management Plan
Author: Jea Won Hwang
Publisher:
Total Pages: 176
Release: 2011
Genre:
ISBN:

The Texas Department of Transportation (TxDOT) is concerned about the widening gap between preservation needs and available funding. Funding levels are not adequate to meet the preservation needs of the roadway network; therefore projects listed in the 4-Year Pavement Management Plan must be ranked to determine which projects should be funded now and which can be postponed until a later year. Currently, each district uses locally developed methods to rank and prioritize projects. These ranking methods have relied on less formal qualitative assessments based on engineers' subjective judgment. It is important for TxDOT to have a rational 4-Year Pavement Management Plan. The objective of this study is to develop a conceptual framework that describes the development of the 4-Year Pavement Management Plan and a proposed ranking process. It can be largely divided into three steps; (1) Network-Level preliminary project screening process, (2) Project-Level project ranking process, and (3) Economic Analysis. A rational pavement management procedure and a project ranking method that are accepted by districts and the TxDOT administration will maximize efficiency in budget allocations and help improve pavement condition. As a part of this study, based on the data provided by the Austin District Pavement Engineer, the Network-Level Project Screening (NLPS) tool, including the candidate project selection algorithm and the preliminary project screening matrix, is developed. The NLSP tool has been used by the Austin District Pavement Engineer (DPE) to evaluate the PMIS (Pavement Management Information System) data and to prepare a preliminary list of candidate projects for further evaluation. The automated tool will help TxDOT engineers easily incorporate the developed mathematical algorithm into their daily pavement maintenance management.