APPROXIMATE DETERMINATION OF RUNNING TIME FOR A PAIR OF FREIGHT TRAINS WITH ELECTRIC LOCOMOTIVE "ERMAK" ON RAILWAY SPAN
New empirical formula for approximate determination of running time for a pair of freight trains with electric locomotive "Ermak" on ideal railway span is presented. Using the proposed empirical formula at trace design allows to set minimum and maximum length of railway spans and to find suitable grounds on the topographic map for placing of separate points with additional side tracks.