The Calculate tab in the Node to Node Edit dialog box is used to
determine the run times for node to node pairs that do not have run times.
The Calculate tab calculates run time by distance, distance/speed
(D/S),and plotting on the map. It offers more criteria in calculating run times compared to
the Calc RT function on the Set tab of the Run
Times Edit dialog box. When the Calc RT button is applied, the system
only calculates run times based on distance/speed.