DART Rail Institute Definitions Practice Exam 2 Questions and Answers
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Course
Railroad Operator
Institution
Railroad Operator
Line of Sight Operation - Answer-Operation sections outside of CST or ABS territories where train operators control their trains based on maintaining adequate separation from preceding trains through VISUAL OBSERVATION.
Interlocking - Answer-An arrangement of signals, switches, and control appar...
DART Rail Institute Definitions Practice
Exam 2 Questions and Answers
Line of Sight Operation - Answer-Operation sections outside of CST or ABS territories
where train operators control their trains based on maintaining adequate separation
from preceding trains through VISUAL OBSERVATION.
Interlocking - Answer-An arrangement of signals, switches, and control apparatus
interconnected such that functions must succeed each other in a predetermined
sequence, thus permitting train movements over routes only if non-conflicting conditions
exist.
Restricted Speed - Answer-Speed which will permit stopping short of another train,
broken rail, stop signal, switch not properly aligned, inoperative grade crossing
equipment, or other obstruction. This speed is not to exceed 25 mph.
Crossover - Answer-Two connected switches which provides a route from one track to
another.
Aspect - Answer-The combination of color and position of a fixed signal, cab signal,
displaying a light or lights as viewed by the operator.
Indication - Answer-The information conveyed by the aspect of a signal.
Guard Rail - Answer-is a rail mounted to the inside of the running rail designed to keep
the LRV wheels in line with the track at SWITCHES.
Restraining Rail - Answer-A rail mounted to the inside of the running rail designed to
keep the wheels in line with the track AROUND CURVES.
Block Indicator - Answer-An indicator in selected SIGHT-RESTRICTED areas of LINE-
OF-SIGHT operation which provides information regarding conditions immediately
ahead for one block only.
Green Band Indicator - Answer-An indicator located in areas of green band operation,
coordinated with highway traffic signal system.
Switch Position Indicator - Answer-An indicator (target or illuminated) at manual and
electric switches displaying alignment for straight or delivering routes.
Terminal Indicator - Answer-An indicator governing movement into and out of end of the
line stations.
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