Effects of Road Slope and Vehicle Weight on Truck Fuel Consumption

In this paper, we developed truck fuel consumption models for the particular assistance of professionals in charge road project valuation terms predicting used by trucks, which is an important topic on vehicle operating costs to be considered benefit–cost analysis projects. On other hand, has a direct impact emissions atmosphere, and thus future research can conducted regarding estimations about trucks. research, identified effect overall weight free-flow regime. The methodology includes design experiments factorial as statistical techniques obtain data, well linear non-linear regressions two types trucks: rigid (three axles) articulated (six axles). Notably, there no evidence previously latter. We methods selection equipment, segments, aspects, obtaining good control tests verifying appropriate values factors according planned ones. results satisfy expectations it was demonstrated that roadway slope were significantly more than speed alone, typically main variable studies. longitudinal slopes higher 5% found not suitable freight corridors. It recommended 6-axle trucks instead 3-axle 16 t amount cargo transported plain (longitudinal under 3%). HDM-4 model did represent adequately current fleet roads. Fuel must updated, instance, every 10 years, such they adapt technological advances energetic improvement fuels, including proportion biofuels gas.