Structure Optimization of Mixed-Speed Train Traffic for Cyclic Timetable: Model and Algorithm Development

Table 2

Theoretical safety minimal headway time of subsequent trains (unit: minute).

	300	270	250	230	200
300	5	5	3	3	3
270	9	5	4	5	3
250	15	10	4	4	3
230	18	14	12	4	3
200	26	20	18	16	4

Note. The items in the first column represent the speed type of the proceeding train, the items in the first row represent the speed type of the following train, and other numbers in the table represent the theoretical safety minimum headway time of adjacent trains.