LIRR Definitions Test Questions with Complete Solutions, Rated A+

WORKING LIMITS - A segment of track with definite boundaries upon which trains may move only as authorized by the roadway worker in charge of that segment of track. AUTOMATIC SPEED CONTROL SYSTEM - 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. PILOT - An employee assigned to a train or track car when the engineer, conductor or track car driver is not qualified on the physical characteristics or rules of the railroad or portion of the railroad over which the movement is to be made. SPEED CONTROLLED TRAIN - A train equipped with the following speed control apparatus: cab signal indicator, sealed application valve or switch, Audible warning device and acknowledging switch, in operative condition for the direction in which it is to move. ABSOLUTE BLOCK - A block established between block stations, block limit stations interlockings or any combination thereof which must not be occupied by more than one train except as provided by the rules. AUTOMATIC BLOCK SIGNAL SYSTEM - A block signal system wherein the use of each block is governed by an automatic block signal, the cab signal indicator or both. ENGINE - A unit propelled by any form of energy or a combination of units operated from a single control, used in road or yard service. INTERLOCKING - 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. MULTIPLE UNIT EQUIPMENT - Equipment capable of being propelled by electrical energy through the use of the third rail contact shoes. STATION - A place designated by name on the station pages of the current timetable. INTERLOCKING SWITCH - A switch within interlocking limits controlled by the Block Operator or Train Dispatcher working in conjunction with interlocking signals and other interlocking appliances. BLOCK-LIMIT STATION - A place at which a block-limit signal is displayed. AUTOMATIC SAFETY SWITCH - A switch identified by a yellow switch stand. Trains may make trailing point moves through the switch without previously aligning it by hand. Except as specified by Timetable Special Instruction. MANUAL BLOCK SIGNAL SYSTEM - A block signal system wherein the use of each block is governed by block signals controlled manually, by block-limit signals or both, upon information received by telephone, radio, or other means of communication.