Abstract
Understanding the costs of pavement construction, pavement maintenance, and vehicle operation is essential to planning the management of life cycle and pavement investments, especially under increasing infrastructure demands and limited budget resources. It has long been known that the road user costs (RUC) of vehicle operation are by far the largest component of pavement total life-cycle costs. Those cost are influenced by many factors; one of the most important factor is pavement performance. Pavement condition will have a significant impact on RUC attribute for instance fuel consumption, tier consumption, vehicle maintenance cost, and crew wages. Therefore a study of influence and sensitivity analysis of RUC on difference pavement condition is required. Hence this study is aiming to investigate the sensitivity analysis by varying International Roughness Index (IRI) as pavement performance indicator using the Road User Cost Knowledge System (RUCKS) program. From the research result, with sensitivity equation RUC ($/vehicle-km) = a0 + a1 * IRI + a2 * IRI^ 2 + a3 * IRI^ 3, it is highlighted that IRI has the highest impact on Articulated Truck and Large Bus in terms of transport cost with Sensitivity to Roughness Cubic Polynomial Coefficients a0 1.12958, a1 -0.06418, a2 0.02110, a3 -0.00136.
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