Audio Frequency Track Circuits

Four hours on Audio Frequency Track Circuits: how their transmitters, receivers, and tuning units detect trains, why frequency selection and modulation keep adjacent tracks from interfering, and how AFTCs interface with relay-based, CBTC, and ETCS signaling on metro and mainline networks.

  • INR 3,000Course fee
  • 04 hoursCourse duration
  • Coming Soon!Cohort access
  • Railway Academy CertificationRailway Academy

Course at a Glance

A structured path from fundamentals to applied practice.

Built for practical design logic, documentation readiness, and certificate-backed completion.

  • 04 hours

    Live Course Duration

    Structured live sessions with instructor support.

    Format: Certificate course

  • Scheduled

    Live Course Access

    Join instructor-led sessions on a fixed cohort schedule.

    Mode: Live online

  • INR 3,000

    Course Fee

    A paid, live certificate pathway with instructor-led sessions.

    Checkout: Direct purchase

  • Certificate

    Completion Credential

    Complete the course requirements to receive Railway Academy certification.

    Pathway: Assessed

  • 4 modules

    4 Modules

    A sequenced curriculum from fundamentals through applied practice.

  • Certificate

    Certificate Pathway

    Complete the course and assessment requirements for Railway Academy certification.

  • 500 points

    500 Rail Points

    Earn Rail Points on completion — redeem for merchandise, badges or paid course discounts.

  • Support

    Advisor Support

    Talk to a counsellor before or during the course if you want to confirm fit.

Ready when you are

Enroll now and start your certificate pathway.

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Is this programme for you

Is this live certificate course right for you?

Answer honestly — the more you check, the better this paid, live certificate course fits your background. Best suited for signalling teams and rail/metro professionals with foundation-level exposure; if you need live commissioning, sign-off or advanced system-engineering depth, talk to an advisor about a more advanced pathway first.

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Tick the statements that sound like you to see your fit.

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Value & Learning Journey

What you'll gain, and how the course gets you there.

INR 3,00004 hoursLive courseCertificate included

What this course offers

Built for anyone who designs, operates, or maintains track circuits.

For anyone whose job touches train detection and needs a working grasp of how AFTCs actually operate.

  • Railway signaling professionals sharpening their technical knowledge of track circuits
  • Metro and mainline operations staff working with train detection and safety systems
  • Engineering students and graduates specializing in railway signaling and automation
  • Maintenance personnel and technicians who work directly with track circuits
  • Professionals moving into CBTC or ETCS roles who need AFTC fundamentals first

Curriculum

Session by session, from fundamentals to applied practice.

01Session 1

Introduction to Audio Frequency Track Circuits (AFTCs)

Topics covered

  • Core components: transmitter, receiver, relays, tuning units, cables
  • Evolution from conventional DC/AC track circuits to AFTCs
  • Audio frequency generation, transmission, and reception

Learning outcomes

  • Identify the core components of an AFTC system and what each does.
  • Explain why audio frequencies outperform DC or low-frequency AC track circuits.
02Session 2

Technologies in AFTC Systems

Topics covered

  • Frequency selection, band allocation, and interference avoidance
  • Modulation and filtering methods for reliable signal transmission
  • Noise immunity and fail-safe design principles

Learning outcomes

  • Explain how frequency selection avoids cross-talk between adjacent tracks.
  • Describe how modulation and filtering keep detection reliable in noisy conditions.
03Session 3

Block Occupancy & Train Detection

Topics covered

  • Detection reliability across wet, rusty, and variable-ballast rail conditions
  • Determining train location within a block section
  • False-clear and false-occupied failure scenarios

Learning outcomes

  • Analyze how environmental and track conditions affect AFTC performance.
  • Identify common failure modes and the preventive maintenance that avoids them.
04Session 4

Applications and Case Studies

Topics covered

  • AFTC deployment across metro, mainline, and high-speed rail networks
  • Interoperability with ETCS, CBTC, and other modern signaling systems
  • Troubleshooting practices and diagnostic tools

Learning outcomes

  • Relate AFTCs to advanced signaling technologies such as CBTC and ETCS.
  • Diagnose common AFTC issues using standard troubleshooting practices.

Case studies

  • AFTC implementation on a metro line running Siemens, Alstom, or Bombardier signaling

Enrollment flow

What happens once you enroll.

A simple three-step flow from paid enrollment to live session access and certificate completion.

Step 01

Enroll

Enroll in the course

Enroll in the paid live course and confirm your learner details. Final access duration should be confirmed before purchase.

Step 02

Access

Get live session access details in your inbox

The team sends cohort schedule and login credentials for the learning management system after enrollment.

Step 03

Certify

Attend sessions and complete certification requirements

Attend the live sessions, complete checkpoints, and follow the certification process shared by the academy team.

What's included

Everything you get with enrollment.

  • Live instructor-led sessions across the full course curriculum
  • Extended LMS access for the length of the course window
  • Unlimited re-watches of every session and demo
  • Downloadable reference notes and documentation templates
  • Advisor support if you want to confirm fit before or during the course
  • Certificate of completion on meeting assessment requirements

Rail Rewards

Complete this course, earn 500 Rail Points.

Click to know more

What can you use Rail Points for?

ZRA branded merchandise
Railway-themed collectibles
Digital learning badges
Learner recognition opportunities
Discounts on signalling & HSR paid courses
Access to selected premium micro courses
Priority seats in live masterclasses

Rail Rewards is ZRA's learner motivation program. Every eligible activity earns points you can redeem against merchandise, badges and course discounts.

This course
500

This course

University
1,000

University

Categories
7+

Categories

Learners
15k+

Learners

Rail Rewards, explained

0:47

Faculty

Learn from the people the industry already calls.

Meet all 60+
Karthik Roy Andra
Tracks01

Karthik Roy Andra

Teaches Railway Track Engineering

Karthik Roy Andra

Teaches Railway Track Engineering

Profile details coming soon.

Profile details coming soon.Profile
M.U.M. Vara Prasada Rao
Rolling Stock and Traction Expert02

M.U.M. Vara Prasada Rao

Teaches Rolling Stock and Traction

M.U.M. Vara Prasada Rao

Teaches Rolling Stock and Traction

Profile details coming soon.

22+ yrs; Rolling Stock Expert in High Speed Rail in ARVEE CONSULTANTS & SERVICES PRIVATE LIMITED Profile
Mohan Bidkar
Electrification03

Mohan Bidkar

Teaches Electrification

Mohan Bidkar

Teaches Electrification

Profile details coming soon.

15+ yrsProfile
Vineet Choudhary
Tracks04

Vineet Choudhary

Teaches Railway Tracks and Infrastructure

Vineet Choudhary

Teaches Railway Tracks and Infrastructure

Profile details coming soon.

20+ yrs; Ex-Delhi Metro Rail Corporation LtdProfile

Certificate & Assessment

Earn a certificate that reflects structured learning.

Learners who complete the course and clear the assessment can request a ZRA certificate of completion — indicating that they have covered the course curriculum and met the defined completion requirements.

Certificate Criteria

  • Complete required course modules
  • Clear all module knowledge checks
  • Complete case-based exercise in Module 4
  • Score above passing threshold in final assessment
  • Submit course feedback form
  • Raise certificate request via LMS
Certificate sampleSample certificate for this live course

Fee & Enrollment

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Invest in practical, job-ready skills.

Join the live cohort, complete the 04 hours pathway, and follow the certificate requirements with your instructor.

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Terms & Conditions

Refund Policy

Please note that all course fees are non-refundable. We encourage participants to carefully review the course details and schedules before enrolling. This policy helps us plan and deliver high-quality sessions and maintain affordable fees for all.

Transfer Policy

Once enrolled, the course fee cannot be transferred to another program, batch, or individual. We appreciate your understanding, as each course is designed with a specific schedule and structure to ensure effective learning.

Course Access and Validity

Access to course materials and sessions will be activated only after successful confirmation of payment. The access will remain valid as per the duration mentioned in the course guidelines. Any request for extension may be considered on a case-by-case basis and may involve additional charges.

Payment Confirmation & Receipts

We recommend keeping a copy of your payment confirmation or transaction ID for your records. Please note that the Academy cannot be held responsible for unsuccessful transactions made through third-party payment gateways. We truly value your learning journey with us and are here to assist you at every step. If you have any questions, feel free to reach out to our support team.

Stories

From engineer to rail leader.

Verified alumnus

A Proud Milestone - I’m delighted to share that I have completed the Executive Post Graduate Programme in Rail Management (Cohort Batch-2) from IIM Kashipur. My sincere thanks to everyone who supported me throughout this 14-month journey. The programme reignited the same curiosity and passion I felt after completing my engineering. The on-campus bootcamp at IIM Kashipur was truly enriching, and earning IIM alumni status is a matter of immense pride. I look forward to staying connected with the alumni community and applying these learnings to contribute meaningfully to the rail industry. A milestone achieved, a journey that continues.

Program

Executive Post Graduate Certificate Program in Rail Management

Outcome

Certified by ZRA and IIM Kashipur

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Questions

Questions before enrolling.

Fast answers on LMS access, prerequisites, assessment, certification, fee terms, and support for this course.

01

What kind of certification will I get after completion of this course?

Railway academy Certification.

02

Is the Railway Academy certificate recognised in the industry?

Yes, Railway Academy certificates are recognised across the rail sector worldwide. We've supported 15,000+ learners through our courses. Please check success stories of professionals like you here to know about our course and certificate credibility.

03

What will be the mode of training?

100% of this training program will be LIVE Online, through the Zoom platform. You will get access to recorded lectures after each class, and this will be valid for one year to study. Once you complete the course you will have to appear in an online assessment. For more queries, please contact at [email protected]

04

What is the assessment process?

The assessment process is mainly online conducted through a multiple-choice based assessment through a portal. The duration of a typical assessment is between 60 - 90 minutes where the student attempts the test on laptop/PC in proctored mode. You need to score 60% to qualify the assessment. Results are announced within a week of assessment schedule and certificates are sent in pdf format within 7-15 days of results announcement.

05

How soon after signing up would I get access to the Learning Content?

Post-enrolment of course, the LMS access will be provided to you within the next 24 business hours and will be available for a year. You will be able to access the complete set of previous class recordings, PPTs, PDFs, assignments. Moreover, access to our support team will be granted instantly as well. You can start learning right away.

06

If I opt out of this course, will I get a refund?

All our programs are non-refundable and non-cancellable. We recommend that you read all information carefully before enrolling. However, we will do everything to ensure you have a smooth learning experience with us.

More questions? See our full FAQ for payments, EMI, refunds, and support.

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