where Mik is a time addition for meetings, depending on train type i, Tik is the minimal travel time of track segment k for train type i and ρ is the probability that two trains meet. The consumed capacity is thus the fraction of the time period S during which a train occupies the segment, including the waiting time for meetings. The scheduled travel time for trains of type i on the line segment, ti, is then computed from the minimal travel time of the line segment, Ti, track length L and C ti ¼ Tiþ max ½ð0:2C–0:06ÞL; 0_;