GCOR Exam 1 Study Set with Complete Solutions Absolute Block - Correct Answers A length of track that no train is permitted to enter while the track is occupied by another train.Absolute Signal - Correct Answers A block or interlocking signal without a number plate, or designated by an A marker.Articulated - Correct Answers Permanently connected multiple unit cars that share a common truck.Automatic Block Signal System (ABS) - Correct Answers A series of consecutive blocks governed by block signals, cab signals, or both. The signals are activated by a train or by certain conditions that affect the block use.Automatic Cab Signal System (ACS) - Correct Answers A system that allows cab signals and the cab warning whistle to operate automatically.Automatic Train Control (ATC) - Correct Answers A system to enforce compliance with cab and wayside signal indications. If the train exceeds a predetermined speed for a given signal indication and speed is not reduced at a sufficient rate, brakes are automatically applied.
Block - Correct Answers A length of track:
× between a consecutive block signals.× between a block signal in the end of block system limits.or × in ATC limits the use of which is governed by cab signals and or block signals.Block Signal - Correct Answers A fixed signal at the entrance of a block that governs trains entering and using that block. 1 / 2
Block System - Correct Answers A block or series of consecutive blocks within ABS, ACS, CTC, or interlocking limits.Cab Signal - Correct Answers A signal in the engineer's compartment or cab that indicates a condition affecting train movement. Cab signals are used with interlocking or block signals or without block signals.Cars - Correct Answers Railroad cars.Centralized Traffic Control (CTC) - Correct Answers A block system that uses block signal indications to authorize train movements.Clearance Point - Correct Answers The location closest to a switch where it is safe for equipment, and a person riding the side of equipment unless prohibited, to pass equipment on an adjacent track.Conductor - Correct Answers Crew member in charge of train or yard crew.Control Operator - Correct Answers Employee assigned to operate a CTC or interlocking control machine or authorized to grant track permits.Control Point - Correct Answers The location of absolute signals controlled by a control operator.Controlled Sidings - Correct Answers A siding within CTC or interlocking limits where a signal idlndication authorizes the siding's use.Crew Member - Correct Answers Conductors, assistant conductors, brakemen, engineers, remote control operators, yard engine foremen, switchmen, and yard helpers.Crossover - Correct Answers A track connection between two adjacent, not necessarily parallel tracks, consisting of a minimum of two switches, which is intended to be used primarily for the purpose of crossing over from one track to another.Current of Traffic - Correct Answers The movement of trains on a main track in one direction, as specified by special instruction.
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