Train of superior class--train given precedence
over opposing trains of an inferior class.
Train of superior direction--train given precedence in the
direction specified by a timetable between opposing trains of
the same class.
Train of superior right--train given precedence by train order.
Yard--system of tracks within defined limits provided for making
up trains, storing of cars, and other purposes, over which
movements not authorized by timetable or by train order may
be made, subject to prescribed signals and rules or special
1.6. RULES GOVERNING SUPERIORITY OF TRAINS
The preceding definitions of rail terms should help you to
understand the following explanations on train superiority, as well
as the information in the remainder of the text.
When trains are operated over a rail net, one train may have to
stop and yield the track to another; the train that stays on the main
track is said to be superior to the other.
This is particularly
common when the operation is over a single-track line, but one train
may have superiority over another even in a double-track operation.
Train superiority is simply a matter of which train takes the siding
and which train continues on the main line. A train is superior to
another by right, class, or direction.
Right is a superiority
conferred by a train order issued by the authority and over the
signature of the chief train dispatcher. The class and direction of
trains are conferred by timetable, with one direction being superior
to the other for trains of the same class.
Right is superior to
class or direction.
Because a clear understanding of train
superiority is imperative, the rules specifying how it is determined
on single or double track are quoted from TM 55-200.
Rules with a
prefix S are for single track, and those with a prefix D are for two
or more tracks; rules without a prefix are for both single and
a. Rule S-71. General.
A train is superior to another train by
right, class, or direction.
(1) Right is conferred by train order; class and direction by