2000 Headway Calcs and Layout

[alexgoei]

Has that made it clearer or confused you now completely?

Hello PJW,

Thanks for clarifying when to use (a) clearing the overlap in order for signals to clear for the next following train as part of identifying pinch points and (b) non stopping train following stopping train (not stopping following stopping).

The DGR from the Non Stopping Headway computation was used as the starting point for determining signal spacing for computing the stopping headway although this may subsequently change to meet the stopping headway requirements. Is this incorrect?

I have had a chance to compare the workings of two other students on this forum; one by "interesting signals" which is 3 aspect and the other by "douglas" which is 4 aspect. Both after some reworking and your comments give almost identical headways of about 244 secs. I am trying to determine which is operationally superior. Will let you know.

Regards

Alex