Integrated Strategy in Road Assesment for Tameroddo-Majene City Boundary Road Section Preservation

Abstract

Tameroddo – Majene City boundary road section is a national road in West Sulawesi, a road connecting South Sulawesi and Central Sulawesi provinces. Its existence is essential for increasing accessability and mobility between regions, for it does not only support economic growth in the West Sulawesi Province, but it also has some positive impacts on socioeconomic development for surrounding areas. Traffic volume, overload, and rainfall are factors that accelerate intensity of road surface irregularities. An analysis of road pavement conditions is, therefore, required to provide existing data for road preservation, to ensure its optimum function in accordance with planned durability. This research is aimed at providing assessment results of the road section conditions, and to compare the results between IRI and PCI measures, as well as to provide an overview or description of the road section conditions. This can, thereafter, be used as an important database for a better planning and implementation. Road assessment had been conducted using an integrated method, by IRI measure performed by using ‘The Hawkeye’ vehicle equipped with high precision laser profilers and accelerometers, DMI, and high-speed cameras along with GPS, incorporating Dinamic Time Warping (DTW) technique, to automatically detect and classifies road irregularities on paved roads. This method, however, followed by manual inspection (or subjective measures). Survey result shows that based on IRI method, ‘fair’ condition reaches 67%, and lightly damaged reaches 33%. While based on PCI method, ‘good’ (equivalent with ‘fair’) condition reaches 66%, and ‘bad’ condition (or equivalent with ‘lightly damaged’) condition reaches 34%. This means that the study found some differences, even though it was only a little. Based on analysis result, amongst total lenght of the road lane had been under assesment (81,8 km), 74,4 km is of ‘fair’ condition, thus it requires a routine maintenance, while the rest 8,4 km is of ‘lightly damaged’ and it requires a regular maintenance.