Kavach 4.0 commissioned for the first time on South Central Railway over 108 route km
On 23 September 2026, the Railways announced the first commissioning of Kavach Version 4.0 on South Central Railway, upgraded from Version 3.2 over 108 route km of the Malkajgiri–Kamareddi section in Hyderabad Division.
Summary
Kavach 4.0, India's indigenous Automatic Train Protection system, was upgraded from Version 3.2 on the Malkajgiri–Kamareddi section. Kavach 4.0 builds on the deployment of Version 3.2 over 1,465 route km on South Central Railway and is planned for large-scale deployment across Indian Railways. Key improvements include higher location accuracy, better signal-aspect information in bigger yards, a station-to-station interface over optical fibre cable, and a direct interface with electronic interlocking systems.
Key facts
- System
- Kavach — indigenous Automatic Train Protection (ATP) system
- Upgrade
- Version 3.2 to 4.0 on 108 route km, Malkajgiri–Kamareddi, Hyderabad Division
- Zone
- South Central Railway — first Kavach 4.0 commissioning in the zone
- Earlier version on SCR
- Kavach 3.2 on 1,465 route km
- Improvements
- Location accuracy; signal info in big yards; station-to-station OFC interface; direct electronic interlocking interface
Practice MCQs 3 questions
Kavach 4.0 was commissioned for the first time on South Central Railway on which section?
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Correct answer: D — Malkajgiri–Kamareddi
Kavach was upgraded from Version 3.2 to 4.0 over 108 route km on the Malkajgiri–Kamareddi section of Hyderabad Division.
Kavach, being upgraded to Version 4.0 by Indian Railways, is what kind of system?
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Correct answer: A — Automatic Train Protection system
Kavach is an indigenously developed Automatic Train Protection (ATP) system that helps the loco pilot keep trains within speed limits.
Consider the following about Kavach 4.0: 1. Kavach 4.0 provides a station-to-station Kavach interface through optical fibre cable. 2. Kavach 4.0 can interface directly with existing electronic interlocking systems. Which of the above is/are correct?
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Correct answer: C — Both 1 and 2
Both are among the key improvements listed for Kavach 4.0, along with higher location accuracy and better signal information in bigger yards.