AHP-TOPSIS for Road Maintenance Prioritization

This study developed a Decision Support System (DSS) integrating the Analytical Hierarchy Process (AHP) and the Technique for Order Preference by Similarity to Ideal Solution (TOPSIS) to prioritize road maintenance. AHP was used to determine the relative weights of economic, engineering, environmental, and social criteria, while TOPSIS was applied to rank road sections based on their performance across these criteria.

The system was evaluated using data from 724.124 kilometers of roads with a maintenance budget of 4.078 million baht. The findings revealed that Benefit-Cost Ratio (B/C) analysis achieved a greater reduction in the International Roughness Index (IRI) but tended to overlook low-volume roads. In contrast, the AHP-TOPSIS approach provided a more balanced budget allocation across different road categories and strategic objectives.

The study demonstrates the potential of an AHP-TOPSIS-based decision support system as a tool for prioritizing road maintenance, particularly for agencies responsible for managing extensive road networks with varying traffic volumes and strategic importance.