Assessment of Road Rehabilitation Thresholds in Urban Areas Using the International Roughness Index: A Case Study in Metro Manila

Urban traffic systems are significant in fostering economic activity and physical mobility. Due to their pavement roughness, these road networks are categorized for ride quality. The study will identify the crucial international roughness index value to set specific rehabilitation thresholds. The resulting findings will highlight the value of data-driven approaches in managing urban infrastructure and offer legislators essential information. The study aims to enhance pavement process management by effectively integrating IRI into existing management systems. A total of 25 road sections were analyzed, and based on a series of analyses, it is recommended to set the rehabilitation threshold for Metro Manila at 4.50 m/km.