Control points, controlled signals and intermediate signals

[NW Mailing List]

Jim,
     A control point or controlled signal is a home signal controlled by 
the dispatcher. An intermediate signal is an automatic block signal and 
not controlled by the dispatcher. A distant signal is one that tells the 
crew that the next signal is a controlled signal. For example, 
Cloverdale branch is black, Track Warrant territory and has no signals 
for its entire nine mile length, other than an Approach Distant signal 
before the signal governing movement off of the branch back out onto the 
mainline. It never changes, so, does not provide any block protection.

Jimmy Lisle