Abstract
Overloaded trucks phenomena generally common in developing countries where the traffic control is poor. In Indonesia, the percentage of overloaded trucks can reach more than 60% in the total number of trucks and may be one of the substantial factors that reduce the service life of the road pavements. This paper presents the analysis results of the weigh in motion survey data at East of Sumatera National Road (Jalintim) in Indonesia and the impact of overloaded trucks on the pavement. For the analysis the simplified approach was used, the axle loads were converted into representative single-axle loads based on 4th power formula by AASHTO 1993 equation. The vehicle damage factor of vehicles is presented and will be compared with the Highways National Standard to estimate the remaining service life of pavement and IRI value prediction. The analysis showed that the vehicle damage factor that determined from weigh in motion data is extremely greater than vehicle damage factor of the national standard in Indonesia which may lead to accelerated deterioration, reducing the service life of the pavement structures and significantly influence the IRI value.
Highlights
The East of Sumatera National Road or known as Jalan Lintas Timur Sumatera/Jalintim is one of the strategic national roads in Indonesia
This paper present the impact of overloaded trucks on pavement structure by considering the service life and International Roughness Index (IRI) value based on Weigh-in-Motion survey (WIM) survey
This study present IRI determination based on Indonesian Integrated Road Management System (IIRMS) that adopted from simplified methods by Paterson and Attoh-Okine [15], where the formula is: IRIn = 1.04e0.023n [IRI0 + 263 (1+SNC)-5 x CSAn] (4)
Summary
The East of Sumatera National Road or known as Jalan Lintas Timur Sumatera/Jalintim is one of the strategic national roads in Indonesia. A study by INDII (The Indonesia Infrastructure Initiative) stated that overloading is the main factor (nearly 50%) that contributed to pavement failure [1] This overloaded vehicles phenomena became common problems in developing countries [2]. While the other studies analyze the loss cost due to overloaded trucks [7,8] These studies based on weigh station data and the total gross weight of the vehicle. The prediction of IRI value demanding an appropriate design of traffic The objective of this present study are to analyze the traffic condition in East of National Road of Sumatera, Indonesia and to analyze the impact of overloaded truck on pavement structure. This paper present the impact of overloaded trucks on pavement structure by considering the service life and IRI value based on WIM survey
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