Computer readable media containing program instructions for determining a ground speed for locomotives of a train comprising at least two locomotives for use in controlling an operation of the train, the computer readable media comprising:

a computer program code for selecting an axle of any one locomotive of the train for measuring a speed corresponding to the selected axle; and

a computer program code for determining a ground speed for at least another locomotive of the train based on a measured speed corresponding to the selected axle of the one locomotive.