in stations is the most important factor, and about two minutes is considered the limit for commuter train sections, and three minutes for general long train (15 cars) sections.
Fig. 9 shows an example of headway around a station. The meanings of the symbols used in the figure are as follows.
T: Headway
t1: Signal changing time (1 sec.)
t2: Time after the train starts until the end of the train enters the inside of the departure signal
t3: Stopping time
t4: Time after the front of the train enters the inside of the home signal until the train stops
t5: Time to run between the rear No. 1 block signal and the home signal
t6: Time to run the distance required to decelerate from the planned speed to 45 km/h at the planned speed
t7: Margin time after the driver confirms the signal until performing the control operation (3 sec.)
