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  • MKWATA, Rahma; CHONG, Elizabeth Eu Mee

    Journal of the Eastern Asia Society for Transportation Studies, 2024, Letnik: 15
    Journal Article

    This study aims to assess the agreement between three Road Safety Performance Indicators (RSPIs) used to evaluate road surface condition, namely Pavement Condition Distress Index (PCI), Present Serviceability Index (PSI), and International Road Assessment Program star ratings scores (iRAP). To achieve this, the study conducted field survey to gather pavement functional condition data on 12 roads that are known for having a higher frequency of accidents in the city of Kuching, Malaysia. The results indicated a significant correlation between PSI and PCI, with a moderately strong correlation coefficient (R2) of 0.7354. This suggests that PSI can be used as a surrogate for PCI when resources and time are limited. However, the correlation between PCI and iRAP star rating scores for vehicle occupants and motorcyclists was not satisfactory, with R2 values of 0.167 and 0.3611, respectively.