Introduction The procedure has been developed to provide a practical method for the prediction of truck performance using accepted data. It is designed to help anyone concerned with the problem of truck selection. By following directions@ it is possible to determine the necessary information for intelligent truck selection without being concerned with the origin or derivation of the complex factors involved. With readily available specifications of a truck@ information provided in the tables@ and a minimum of calculation@ it is possible to predict: (a) The performance obtainable from a truck of given characteristics under given operating conditions. (b) The characteristics required in a truck to meet different performance requirements under given operating conditions. This report comprises a procedure form and 10 tables of data. A complete explanation of the truck ability prediction procedure is contained in SAE Technical Report HS-82@ Truck Ability Prediction Procedure. Part 1 of HS-82 contains@ in addition to the procedure form and tables work sheets1 and an example Part 2 demonstrates by practical examples how to obtain some of the answers other than grade ability@ and presents a detailed procedure for computing instantaneous acceleration and the time or distance required to accelerate between specified limits of speed. Part 3 gives terminology@ the fundamental relations@ and the formulas which form the basis for the procedure@ a discussion of the reliability of factors and methods@ and presents a method for evaluating the effect of wind on air resistance. 1Work sheets in pads of 150 may be purchased from the SAE. One copy of the report form@ suitable for reproduction@ will be supplied with each pad@ and additional copied may be purchased. This combination is HS-83@ Truck Ability Work Sheet Pad and Vehicle Ability Report Form.