Union Pacific -- Railroading Basics (GCOR) Exam | Most Recent
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, 4/8/26, 11:12 PM Union Pacific -- Railroading Basics (GCOR)
Main Track
A track extending through yards and between stations that must not be
occupied without authority or protection.
Station
A place designated by name in the timetable station column.
Single Track
A main track where trains are operated in both directions.
Train
One or more engines coupled, with or without cars, displaying a marker, and
authorized to operate on a main track. A term that when used in connection
with
speed restrictions, flag protection, and the observance of all signals and
signal rules also applies to engines.
Yard Limits
A portion of main track designated by yard limit signs and timetable
special instructions or a track bulletin. Within Yard Limits, trains or engines
are authorized to use the main track not protecting against other trains or
engines. You can have Yard Limits without a yard. (Rule 6.13)
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