ANALYSIS OF COST OF ROAD INFRASTRUCTURE MAINTENANCE CAUSED BY OVERWEIGHT GOODS TRANSPORTATION IN PRIMARY ARTERIAL ROADS

The technology of freight transport systems contributes to increasing capacity and speed of transport, which has an impact on the volume of people and goods transported. Goods transport vehicles on the highway significantly increase their carrying capacity, while the carrying capacity of the road does not increase as fast as the vehicle's carrying capacity increases. Maintenance of sustainable road infrastructure is needed so that the service life of the road is as planned. Research methods with quantitative analysis using primary and secondary data from road conditions, vehicle loads from the field and maintenance costs. The results of the analysis using regression and multiple logarithms on the eastern cross roads of Sumatra obtained the relationship of the level of road damage (SDI) according to the equation which is a function of the costs of planning, maintenance and construction of roads. The conclusion is that maintenance costs increase every year to maintain SDI in good and moderate conditions. Road Damage Rate is influenced by the variable cost of constructing goods transport traffic loads according to plan (Standart Axle Load/SALstd) and overloading load (SAL Over).