100% Correct
ABS - Answer - ✔✔ Automatic Block Signal System
Absolute Block - Answer - ✔✔ A length of track that no train is permitted to enter while
the track is occupied by another train.
Absolute Signal - Answer - ✔✔ A block or interlocking signal without a number plate, or
designated by an A marker.
ATS - Answer - ✔✔ Automatic Train stop system
Automatic Block Signal system - Answer - ✔✔ 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 - Answer - ✔✔ 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 - Answer - ✔✔ 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 - Answer - ✔✔ a system activated by wayside
inductors positioned to apply the brakes automatically until the train stops
Block Signal - Answer - ✔✔ A fixed signal at the entrance of a block that governs trains
entering and using that block
Block system - Answer - ✔✔ a back or series of consecutive blocks within ABS ACS
CTC of interlocking limits
Centralized traffic control CTC - Answer - ✔✔ a block system that uses block signals
indications to authorize train movements
Control operator - Answer - ✔✔ Employee assigned to operate a CTC or interlocking
control machine or authorized to grant track permits