An AHP-based approach to prioritizing resources for highway routine maintenance.
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2013-09-01
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Abstract:The Texas Department of Transportation has been experiencing maintenance budget fluctuations recently. The ; budget shortage has a negative impact on the agency’s maintenance strategies and results in the undesirable ; deterioration of highway conditions, increasing the risk for both road users and the agency. This project aims to ; develop a methodology to minimize the impact of budget fluctuation by quantifying the risk of not performing a ; maintenance activity and identifying the priority of maintenance activities based on the quantified risk. ; With the help of maintenance experts from TxDOT, 4 maintenance objectives and 16 maintenance function ; groups were identified and a hierarchy structure was developed based on the objectives and function groups. Four ; pilot districts were selected to represent the different demographic and climatic regions in Texas and maintenance ; experts were selected from the four districts to participate in the workshop. The overall relative weights of the 16 ; maintenance function groups were determined based on the individual evaluator’s judgments using the Analytical ; Hierarchy Process. To determine whether the 4 pilot districts varied in assigning relative importance to the 4 ; defined objectives and priority to the 16 maintenance groups, statistical analyses were conducted with the 4 sets of ; values, 1 for each of the 4 pilot districts, using Kruskal-Wallis test. ; Lastly, a web-based prototype system was developed to assist users in generating the list of maintenance ; projects under budget constraints. Exposure factors, ADT, and truck volume were applied in the system to factor in ; the impact of traffic on the maintenance strategy. Users of this system can choose to use the weights and parameter ; values from the pilot district that they think is most comparable to their own district, or use the state average values ; that have proved to be applicable to all the districts in Texas.
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Main Document Checksum:urn:sha-512:00e50e6874651127d4750541999005bcaf2b98ed13f8493d4965231be92aa429c521768f7948f15fe278c0b41e23962f9211355f99bd81d991913ec340043bb8