2006-Aspect Sequence Chart

[Peter]

Dear PJW

I will review my attempt as suggested in your comments. I am not sure I fully understand the aspect sequence.

A stuck question in my mind, why doesnt the aspect sequence show callon routes? I could not find the reason behind.

Thanks
Arnut

Call on moves are almost always approach released from red and hence there is no relevant main aspect sequence up to a call on move that differs from the aspect sequence to the main signal associated with it being at red. The call on being shown is not dependent on the aspect of an exit signal (indeed there is not really and exit signal since you expect the section to be occupied). Showing call ons therefore adds nothing on the aspect sequence chart.

Peter