d. Completing the order. After the order is copied, the first operator
addressed by the dispatcher, the one copying the order for the superior
train, reads the order back.
As the operator repeats the order, the
dispatcher underscores each word.
If the repetition is correct in all
respects, the dispatcher completes the order by saying "complete" and giving
the exact time, such as 0931 hours.
This, in effect, is saying, 'Okay,
you've got it correct at 0931 hours. You are free to deliver the order to
the train when it arrives."
The word "complete" is generally abbreviated
"com," and it is written along with the time in the appropriate spaces at
the bottom of the train order (fig. 5.1). Then in turn each of the other
operators repeats the order from his written copy, as the dispatcher
underscores each word in his train-order book and completes the order as he
did for the first operator. Now, they, too, are authorized to deliver the
orders to their respective trains along with a Clearance Form "A" (par.
In short, train orders have no validity until they have been
completed, and the completing is done according to the superiority of the
particular trains. This means that the order for the superior train, which
is being restricted, must be completed before the one for the inferior train
which the order helps. The only exception to this procedure is known as the
"X" response, discussed in the next paragraph.
THE "X" RESPONSE
Train-order rules require that, when an order has been transmitted to
several offices, the receiving operators are to repeat it at once from their
copy and in the succession in which the several offices have been addressed.
Therefore, the last operator addressed is the last one to repeat it. The
dispatcher and all operators on the wire listen for any flaws or omissions
in the repetitions.
Occasionally, however, the last operator must necessarily repeat the
order first. This is permitted when it can be completed and delivered to an
inferior train which would otherwise be delayed while several other
operators are repeating the order to the dispatcher. When this occurs, he
directs that the operator receiving the order for the superior train give
the "X" response, as rule 212 in appendix III explains. Then he permits the
operator copying the order for the inferior train to repeat his first and,
when he's finished, to deliver it.
Once the "X" response is given, the
order may be repeated and made complete to the inferior train before the
operator copying for the superior train repeats his order. When this