oa Civil Engineering = Siviele Ingenieurswese - A numerical approach to the prediction of truck performance on grades

Volume 20, Issue 5
  • ISSN : 1021-2000



The Highway Capacity Manual 1965 (Highway Research Board Special Report 87) provides curves predicting the performance of trucks on up-and downgrades. These curves contain information of great value to the highway engineer but are difficult to use in practice. In order to obviate this difficulty mathematical approximations have been formulated and are presented as a series of equations. These equations achieve close agreement with the original curves and enable predictions of truck performance on grades to be made rapidly and conveniently with the aid of very simple computers. The equations are applicable to vehicles in the category 120 kg/kW.

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