by nick11a
Okay, here's a question on how the track signal logic works at East Gladstone in the west direction. This fixed signal is the last westward fixed signal on the branch.
From what I've seen, there are two types of "proceed" signals that trains can get here: an approach or a restricting. Trains that are routed directly through the signal (without getting a stop) get an approach, but trains that are held at that signal with a stop displayed get a restricting when the dispatcher allows them to proceed west.
My question is: how does the track circuit logic work here? What is the factor that enables that fixed signal to display one aspect over another?
As a side note, I'm just asking purely from a curiosity standpoint. There really is no speed differential in the operation of a train with either of the proceed signal aspects here. I do believe that the cab signals at this location in the west direction are dropped to restricting regardless of what the fixed signal says.
From what I've seen, there are two types of "proceed" signals that trains can get here: an approach or a restricting. Trains that are routed directly through the signal (without getting a stop) get an approach, but trains that are held at that signal with a stop displayed get a restricting when the dispatcher allows them to proceed west.
My question is: how does the track circuit logic work here? What is the factor that enables that fixed signal to display one aspect over another?
As a side note, I'm just asking purely from a curiosity standpoint. There really is no speed differential in the operation of a train with either of the proceed signal aspects here. I do believe that the cab signals at this location in the west direction are dropped to restricting regardless of what the fixed signal says.
~Nick O.: Moderator: NJT Rail
Moderator of the "widely popular" NJT Rail Forum! What once was first is now seventh!
Moderator of the "widely popular" NJT Rail Forum! What once was first is now seventh!