Axle Counters
AXLE COUNTERS EXAM QUESTIONS AND ANSWERS
LATEST UPDATE.
Axle counter definition Answer >>>>>> answer Method of detecting the presence
of a train or vehicle(s) on a line. Track mounted equipment at each end of a
portion of line counts the number of axles passing over it. This identifies when a
portion of line is occupied or clear by counting axles in and axles out of the axle
counter section.
What will an axle counter not detect and why? Answer >>>>>> answer It will not
detect vehicles that have been placed on the track mid-section between two axle
counter heads (the axle counter will only detect vehicles that have PASSED an axle
counter head).
What is EPR? When is it used? Answer >>>>>> answer Engineer’s Possession
Reminder. Applied by the signaler to axle counter sections in advance of pre-
planned engineering works or line blocks.
Must only be applied to axle counter sections that are working normally, are
clear, and included in the possession.
Must not be removed until the affected axle counter section is confirmed clear
and safe for trains to run on.
What does removing EPR do? Answer >>>>>> answer Initiates an unconditional
reset and restoration of the affected axle counter section, without aspect
restriction.
, Axle Counters
Explain LCV? Where is it published? Answer >>>>>> answer Line Clear
Verification.
Enhanced means of proving the line is clear following engineering works on axle
counter areas.
Applicable to any area which uses an EPR.
Locations where LCV applies are published in the Sectional Appendix.
What is IRR? To what signals does it apply? Answer >>>>>> answer Indication of
Restricted Route.
Provided to main aspect-controlled signals (which have route-setting facilities)
that have an aspect restricted section(s) within the route.
What is STR? When is it used? Answer >>>>>> answer Special Train Reminder.
A control to restore the railway back to normal working after the passage of a
train fitted with a wheel skate or a train grinding in service (these trains are likely
to disturb axle counters).
Initial signaler actions when an axle counter section fails to clear (or shows
occupied for some other reason)? Answer >>>>>> answer Ensure no train has
been signaled over the affected portion of line. Ensure last train has passed clear
of the axle counter section concerned (train has occupied and cleared the overlap
of the next signal beyond / received 'train out of section' / told train has passed
out of section CWTL).
AXLE COUNTERS EXAM QUESTIONS AND ANSWERS
LATEST UPDATE.
Axle counter definition Answer >>>>>> answer Method of detecting the presence
of a train or vehicle(s) on a line. Track mounted equipment at each end of a
portion of line counts the number of axles passing over it. This identifies when a
portion of line is occupied or clear by counting axles in and axles out of the axle
counter section.
What will an axle counter not detect and why? Answer >>>>>> answer It will not
detect vehicles that have been placed on the track mid-section between two axle
counter heads (the axle counter will only detect vehicles that have PASSED an axle
counter head).
What is EPR? When is it used? Answer >>>>>> answer Engineer’s Possession
Reminder. Applied by the signaler to axle counter sections in advance of pre-
planned engineering works or line blocks.
Must only be applied to axle counter sections that are working normally, are
clear, and included in the possession.
Must not be removed until the affected axle counter section is confirmed clear
and safe for trains to run on.
What does removing EPR do? Answer >>>>>> answer Initiates an unconditional
reset and restoration of the affected axle counter section, without aspect
restriction.
, Axle Counters
Explain LCV? Where is it published? Answer >>>>>> answer Line Clear
Verification.
Enhanced means of proving the line is clear following engineering works on axle
counter areas.
Applicable to any area which uses an EPR.
Locations where LCV applies are published in the Sectional Appendix.
What is IRR? To what signals does it apply? Answer >>>>>> answer Indication of
Restricted Route.
Provided to main aspect-controlled signals (which have route-setting facilities)
that have an aspect restricted section(s) within the route.
What is STR? When is it used? Answer >>>>>> answer Special Train Reminder.
A control to restore the railway back to normal working after the passage of a
train fitted with a wheel skate or a train grinding in service (these trains are likely
to disturb axle counters).
Initial signaler actions when an axle counter section fails to clear (or shows
occupied for some other reason)? Answer >>>>>> answer Ensure no train has
been signaled over the affected portion of line. Ensure last train has passed clear
of the axle counter section concerned (train has occupied and cleared the overlap
of the next signal beyond / received 'train out of section' / told train has passed
out of section CWTL).
