Train performance calculated by digital computer ¿ Supplemental programs

THE CALCULATION OF TRAIN performance, i.e., the speed, the distance traveled, and the running time of a given train over a given route, provides useful information to railroad management and to manufacturers of railroad traction equipment. These calculations are tedious and time consuming when performed manually. For this reason several special-purpose machines have been constructed to perform the computations more rapidly.1 Recently the use of high-speed digital computers has resulted in a much greater saving of time.