MTA Definitions.docx

Block - correct answer A length of track of defined limits, the use of which is governed by block signals, block limit signals, automatic speed control or any combination thereof Automatic Block Signal System - correct answer A block signal system wherein the use of each block is governed by an automatic block signal, the cab signal indicator or both Automatic Speed Control System - correct answer A System so arranged that its operation will automatically result in the following: A full service application of the train brakes if, while operating under a speed restriction, the speed of the train exceeds the predetermined rate. The application will continue until the train is either brought to a stop, or under the control of the engineer, its speed is reduced to the predetermined rate. Interlocking - correct answer An arrangement of signals and signal appliances so interconnected that their movements must succeed each other in proper sequence and for which interlocking rules are in effect. Fixed Signal - correct answer A Signal of a fixed location indicating a condition which affects the movement of a train. Home Signal - correct answer A fixed signal that displays stop as its most restrictive aspect and governs the entrance to a route or block. Cab Signal Indicator - correct answer A Signal indicator located in the engine control compartment displaying the maximum speed for the movement of the train. It will be used in conjunction with interlocking signals and either in conjunction with or in lieu of block signals. Job Briefing - correct answer When reporting for duty, employees whose duties require coordination with other employees must hold a job briefing to review operational and safety conditions. If these conditions change, employees must hold an additional job briefing to discuss the new conditions.