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Infinity Training and Assessing can offer a variety of signalling training courses at our fully equipped premises in Horsley Cross.

The instructors provided will be highly experienced in the technical subject and either be working towards the recommended level 4 trainer qualification or will have already achieved this or higher.

To view the courses we are able to offer please click on the links. However should you not be able to find the course you require please email us at info@infinity-training.co.uk and we will do our best to help.


"We found the trainer to be very knowledgeable, patient and helpful throughout the course. Everything was explained in a manner that was easy to take in and remember. All in all it was a great course" Technotrack Engineering Team Leader

AC Track Circuits

New category?
Number of delegates: 8
Duration: 4 days
Location: Horsley Cross

Who should attend

Delegates who require an understanding of AC double rail and single rail track circuits.


By the end of this course successful delegates will be able to:

  • Identify the main components of 50 Hz AC track circuits and their different configurations
  • Understand the principles of double rail and single rail AC  track circuits
  • Identify bonding plan symbols for AC track circuits 
  • Replace specific items of 50Hz AC track circuit equipment
  • Be capable of locating a basic fault and rectifying the fault
  • Replace a specified item of the 50 Hz AC track circuit equipment 
  • Perform routine servicing of 50Hz AC track circuits in accordance with the current SMS and complete the relevant documentation  
  • Use test equipment specific to 50Hz AC including the phase angle meter
  • Undertake track circuit testing as guided by Network Rail instructions
  • Identify Infrastructure conditions that may affect correct operation of 50Hz AC track circuits 

Learning approach

40% classroom-based using proactive discussions regarding diagrams and drawings.

60% practical-based on live AC track circuits.

Theory and practical assessments will be undertaken to check the delegates' understanding and a certificate will be issued on successful completion of the course.


Delegates are expected to have a good understanding of the signalling industry and have completed BS1/BS2 or equivalent.