seemed to be a reason to put off this change, however, during the
recent PNR regional convention in Boise I had the opportunity to
rub elbows with Seth Neumann and Jim Providenza and they set
about evangelizing me into the TT&TO faith.
Train order signals
When a dispatcher needs to modify a time table or create an
extra train outside of the time table, he dictates train orders to the
operator at one or more train order stations. If the train orders are
for a train originating at that station, the crew picks up the orders
(and a clearance card) from the operator before leaving. But, if the
dispatcher needs to modify the authority of a train that's already
on the high iron, how do the train orders get to the crew?
The answer is train order signals. The operator sets the appropri-
ate signal (east or west) to red or yellow to tell approaching trains
there are orders for them. If the train order signal is set to red,
the train stops and the conductor and engineer climb down, go to
Up the Creek Column - 2
2: The Oakhill depot is the future home for a lower
quadrant train order semaphore. I cut away the fascia to
access the space for the servos beneath the roadbed.
2
MRH-Oct 2013
