BNSF Test 1 Questions with Correct Answers
ABS
Automatic Block Signal System
Absolute Block
A length of track that no train is permitted to enter while the track is occupied by another
train.
Absolute Signal
A block or interlocking signal without a number plate, or designated by an A marker.
ATS
Automatic Train stop system
Automatic Block Signal system
a series of consecutive blocks governed by block signals, cab signals, or both, the signals are
activated y. train for by certain conditions that affect the block use.
Block
A length of track: between consecutive block signals/ between block signal and the end of a
block system / or in ATC limits the use of which is governed by cab signals and/or block
signals
Automatic Train Control ATC
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.
, Automatic train stop system ATS
a system activated by wayside inductors positioned to apply the brakes automatically until the
train stops
Block Signal
A fixed signal at the entrance of a block that governs trains entering and using that block
Block system
a back or series of consecutive blocks within ABS ACS CTC of interlocking limits
Centralized traffic control CTC
a block system that uses block signals indications to authorize train movements
Control operator
Employee assigned to operate a CTC or interlocking control machine or authorized to grant
track permits
Control Point
a locations of absolute signals controlled by a control operator
Controlled siding
a siding within CTC of interlocking limits where a signal indication authorizes the sidings use
Controlled signal
an absolute signal controlled by a control operator
Crossing at Grade
crossings that intersect at the same level
ABS
Automatic Block Signal System
Absolute Block
A length of track that no train is permitted to enter while the track is occupied by another
train.
Absolute Signal
A block or interlocking signal without a number plate, or designated by an A marker.
ATS
Automatic Train stop system
Automatic Block Signal system
a series of consecutive blocks governed by block signals, cab signals, or both, the signals are
activated y. train for by certain conditions that affect the block use.
Block
A length of track: between consecutive block signals/ between block signal and the end of a
block system / or in ATC limits the use of which is governed by cab signals and/or block
signals
Automatic Train Control ATC
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.
, Automatic train stop system ATS
a system activated by wayside inductors positioned to apply the brakes automatically until the
train stops
Block Signal
A fixed signal at the entrance of a block that governs trains entering and using that block
Block system
a back or series of consecutive blocks within ABS ACS CTC of interlocking limits
Centralized traffic control CTC
a block system that uses block signals indications to authorize train movements
Control operator
Employee assigned to operate a CTC or interlocking control machine or authorized to grant
track permits
Control Point
a locations of absolute signals controlled by a control operator
Controlled siding
a siding within CTC of interlocking limits where a signal indication authorizes the sidings use
Controlled signal
an absolute signal controlled by a control operator
Crossing at Grade
crossings that intersect at the same level
