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Metro Test
| Question | Answer |
|---|---|
| Traffic signals timed such that such that a train maintaining designated speed does not stop! at any intersection between station. | Predictive Priority |
| An instruction issued by the Rail Controller giving an operator authorization to stop and proceed through a stop indication, intersection or gate malfunction when safe.(DOES NOT APPLY TO INTERLOCKS) | Stop and Proceed |
| A system where a train and wayside equipment provide electronically coded Information to subsystem equipment(radio). | Train-to-Wayside Communication |
| Any object as agreed upon that represent a train's movement authority in a single track. | Token |
| Hand held used to perform track inspection on LRV equipment with RFI tags. | Zonar |
| A speed that allows an operator to stop short of another train, broken train, broken rail, stop signal, a track switch not properly aligned, inoperative grade crossing equipment, work crew, pedestrian or other obstructions not to exceed 20mph. | Restricted Speed |
| A good LRV is used to either push or pull a disabled LRV train-line is isolated. Disabled LRV has fraction brakes manually cut-out (pump-off) and is normally auxed-off and panned down. | Dead Tow |
| The under car frame containing the wheels,axles, motors, suspension and associated braking component of the LRV. | Truck |
| A qualified employee who guides and instructs equipment operators that are not certified to operate on Metrorail tracks. | Pilot |
| The roof mounted device of an LRV of collecting 750Vde from the OCS. | Pantogragh |
| An unauthorized person within the confines of the established track way. | Trespasser |
| A device used for dividing contact wire into electrical sections. | Section Insulator |
| Routing of a train or equipment into the path of an oncoming vehicle. | Conflicting Movement |
| An electrical device used to provide a path for traction power negative return and block AC signal circuit current. | Impedance Bond |
| Two signals working in conjunction to provide routing and traffic signal sequencing information. | Pair Signal |
| A written set of instructions given by Rail Control governing movement of train. | Train Order |
| Electronic control circuits which run the full length of the train so that commands from the Operator cabs are transmitted to all vehicles in the train. | Train Line |
| Instruction designed to govern the conduct, operation, performance and procedural responsibility of the LRT operation. | Standard Operation Procedure |
| The drive/brake that allows the train operator to control movement of the train. | Master Controller |
| Device at the end of a track designed to prevent LRVs from leaving the track. | Bumping Post |
| A system used to show track occupancy or vacancy by transmitting a pulse to detect passing wheels of a train. | Axle Counting System |
| A system of overhead wires including contact wire, messenger wire, and hangers which supplies traction power to LRV via the pantograph. | Catenary |
| The person designated to ride in a disabled LRV in order to provide a controlled braking effort. | Brakeman |
| The upper most electrical conductor in a catenary system from which the control wire is suspended by means of hangers. | Messenger Wire |
| Maximum amount of normal brake applied using dynamic and friction brakes. | Full Service Brake |
| Unintentional mechanical or electrical separation to two LRV couplers while a train is in motion. | Accidental Uncoupling |
| A specific location which designates the separation of yard tracks and mainline tracks or test track. | Yard limits |
| Movement strictly governed by Rail Control permitting trains or equipment on a mainline track to operate in a direction opposite to that prescribed by rules. | Reverse Movement |
| A device that displays operational status, fault monitoring and provides system control to the user. | Human Machine Interface |
| A directive issued by a Director or authorized subordinate in explaining a procedure on how to perform a certain task. | Memo |
| The electrical conductor which provides the 750Volts Direct Current (VDC) to the LRV through contact with the pantograph. | Contact Wire |
| The vertical dropper wire spaced at regular intervals which suspend the contact wire from the messenger wire. | Hanger |
| A block strictly governed by Rail Control which no other train is permitted to enter while it is occupied by another train. | Absolute Block |
| Highest level of recoverable braking utilizing dynamic, track and friction brakes. Note: the slip/slide system and automatic sanding are active. | Maximum Service Brake |
| A section of the track having specific limits for conducting specific tests as authorized by Rail Control/Station Office. | Test Block |
| A track structure used at the intersection of two running rails to provide support for wheels and passageways for flanges,thus permitting wheels on either rail to cross the other. | Frog |
| A portable red flag, light or marker placed on or near each end of a track indicating the track is out of service or being fouled. | Red Flag |
| Two connected track switches, which provide a route from one track to another. | Crossover |
| A designed non-revenue section of track where trains enter or depart the yard. | Yard Lead |
| An arrangement of signals, switches and control apparatus interconnected to provide a route and prevent conflicting train movement. | Interlocking |
| A person assigned to protect workers and equipment on or near the tracks and to ensure the safe passage of trains. | Flagger |
| The Information display unit located on the LRV cab console. (TOD) | Train Operator Display |
| A length of track having defined limits with its occupancy governed by fixed signals or rail controllers orders. | Block |
| The number and specific identity of LRV(s) that make up a train. | Consist |
| Movable section of track which aligns a track switch to the desired direction of travel. | Switch Point |
| A transition in the OCS where different wiring sections are insulated from each other not a physical device. | Insulated Overlap |
| An electro-magnetic device that stops a train in the event of an unauthorized interlocking red signal overrun to ensure observance of governing signal indication. | Magnetic Trip System |
| A communication system by RCC to monitor and operate field device such as to track train movement, line switches, control tests and other functions. SCADA | Supervisory Control and Data Acquisition |
| Operation on sections of track where Train/Equipment Operators control the train based on maintaining an adequate separation from preceding trains, work crews or other obstructions through visual observations. | Line Of Sight Operation |
| An electrical track circuit located at each AHGC. The Island Circuit consists of the crossing itself and a short distance beyond on both sides of the crossing. This circuit activates thee AHGC sequence when a train occupies the crossing. | Island Circuit |
| The switch position aligned to allow diverging train movemen over a track switch. (not direction of travel) | Reverse Switch Position |
Created by:
Captdee