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Westpac Geographical Interlocking – Mk 111A - Appreciation

Signalling Maintenance Courses

Duration 5 days
Location Derby or Any location subject to equipment requirements
Delegates Maximum 10

Bespoke & Private Courses

We can also reserve a course for your company exclusively, and we can design courses to meet your company's specifications. Please contact us to discuss your requirements.

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This course is intended for staff to gain a basic knowledge of this type of interlocking.

Key Features

  • Basic understanding of the system
  • Overview of the processes
  • Overview of the relay names and functions

Course Outcomes

On successful completion of this course, the delegate will be able to demonstrate an understanding of the following:

  • Principles of Geographical Circuitry
  • System Construction and Wiring
  • Levels of route
    • Selection
    • Calling
    • Locking
    • Aspects
    • Releasing
  • Panel Indications

Assessment and Certification

Achievement of the Course Outcomes will be assessed by a short theory assessment to demonstrate the underpinning knowledge gained.

The delegate’s achievement of the Course Outcomes will be confirmed by a certificate which will be forwarded to the nominated client contact following the course.


It would be helpful if delegate have some prior knowledge of general signalling principles and circuitry.

Practical Information

Duration: 5 Days

Location: at our Derby training centre, or on your premises where a training interlocking is available.

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