Grand Scales General Code of Operating Rules – First Edition – January 1, 2007
Independent Brake Valve A brake valve that provides control of the locomotive brakes regardless of the automatic brake valve handle position.
Initial Reduction The minimum pressure reduction of the brake pipe to cause an automatic train brake application.
Main Line A primary artery of a railroad, which may consist of one or more main tracks.
Main Reservoir An air reservoir on the locomotive for storing and cooling compressed air.
Main Track A track, other than auxiliary track, extending through yards and between stations, which must not be occupied without authority or protection.
General Manager or other employee designated by timetable or general order responsible for the safe and efficient operation of the railroad, maintaining schedules and monitoring employees’ adherence to the rules.
Pilot An employee assigned to a train when the engineer or conductor is not acquainted with the rules or a portion of the railroad over which the train is to be moved.
Points The moveable part of a switch, used to direct wheel flanges from one set of tracks to another.
Regular Train A train authorized by a timetable schedule.
A speed that will permit stopping within one-half the range of vision; short of a train, engine, railroad car, stop signal, derail, or switch not properly lined, looking out for broken rail, not to exceed three miles an hour (walking speed).
Right-of-Way The strip of land upon which a railroad track is built.
Road Foreman of Engines An operating officer who governs the adherence to the rules as well as the safe and efficient operation of locomotives by enginemen.