Kavach 4.0 now guards Karchana–Mirzapur stretch
North Central Railway has started Kavach 4.0 on the 69.5-km Karchana–Mirzapur section in Uttar Pradesh, on the busy Delhi–Howrah route. Kavach now covers 785 route km in the zone. Read it to revise how Kavach works and why train safety matters.
- Section
- Karchana–Mirzapur, 69.5 km
- Zone
- North Central Railway
- Coverage
- 785 route km
- Standard
- SIL-4
Kavach 4.0 on Karchana–Mirzapur: what happened?
If a driver misses a red signal, Kavach steps in and stops the train. It is a safety net made in India.
- North Central Railway commissioned Kavach 4.0 on the 69.5-km Karchana–Mirzapur section.
- The section is on the busy Delhi–Howrah route.
- Kavach now covers 785 route km in the zone.
- It costs about ₹50 lakh per km of track and ₹80 lakh per locomotive.
What is Kavach?
Kavach is an indigenous automatic train protection system developed by the Research Designs and Standards Organisation (RDSO) with Indian firms.
It brakes the train on its own to prevent signal jumping, head-on and rear-end collisions.
It uses radio frequency identification (RFID) tags on the track and radio links. It became India’s national train protection system in July 2020.
How does Kavach stop a crash?
| Part | Role |
|---|---|
| RFID tags on track | Tell the train its exact place |
| Loco unit | Reads signals and speed |
| Station unit | Sends signal data by radio |
| Auto brake | Stops the train if the driver fails |
Which laws and Articles apply?
- Kavach: national automatic train protection system since July 2020.
- Safety Integrity Level 4: the highest safety standard.
- Railway Safety: Commission of Railway Safety under the Civil Aviation Ministry.
- RDSO: research body of the Ministry of Railways, in Lucknow.
Why does Kavach 4.0 matter?
| Angle | What to note |
|---|---|
| Safety | Prevents collisions and signal jumping. |
| Make in India | Home-grown technology. |
| Busy routes | Delhi–Howrah is a key corridor. |
| Cost | Wide rollout needs large funds. |
What are the problems with Kavach 4.0?
- Rollout is slow across the huge network.
- High cost per km and per engine.
- Needs reliable radio and power.
- Old engines need retrofitting.
What should be done next on Kavach 4.0?
- Speed up rollout on busy routes first.
- Make Kavach parts in India at scale.
- Train drivers and staff.
- Fit all locomotives with Kavach.
What can Prelims ask on Kavach 4.0?
Prelims probability: Expect a question on Kavach: made in India, with radio frequency identification tags on the track.
- Kavach: made in India by RDSO with Indian firms.
- Uses RFID tags on the track.
- Meets Safety Integrity Level 4.
- National train protection system since July 2020.
- Karchana–Mirzapur is in Uttar Pradesh.
How to write about Kavach 4.0 in Mains
Practice question (15 marks, 250 words): Technology like Kavach can transform railway safety. Discuss the challenges in its rollout.
- Intro: Karchana–Mirzapur rollout.
- How Kavach works.
- Benefits.
- Challenges: cost, speed.
- Conclusion: safe rail for all.
Ready lines for your answer
- A train that can stop itself saves lives.
- Safety is the best speed.
Quotable data pointKavach covers 785 route km in North Central Railway.
Photo: Ministry of Railways (India), GODL-India, via Wikimedia Commons
Exam angle
Prelims: Kavach, RFID, SIL-4. · Mains GS-III: infrastructure and safety.
Practice MCQs
Original practice questions (not PYQs).
Kavach, the automatic train protection system now running on the Karchana–Mirzapur section, was developed by:
Answer (a) & explanation
Kavach was developed indigenously by the Research Designs and Standards Organisation, Lucknow, with Indian firms. It was not developed with Germany.
Consider the following statements:
1. Kavach meets the Safety Integrity Level 4 standard.
2. Kavach was adopted as India's national Automatic Train Protection system in July 2020.
3. The headquarters of the North Eastern Railway is at Gorakhpur.
How many of the above statements are correct?
Answer (c) & explanation
All three are correct. The North Central Railway, which commissioned this section, has its headquarters at Prayagraj.
Questions students ask about this
What is Kavach?
An indigenous automatic train protection system that stops trains on its own to prevent collisions.
Where has Kavach 4.0 been started?
On the 69.5-km Karchana–Mirzapur section in Uttar Pradesh.
What safety standard does Kavach meet?
Safety Integrity Level 4.
Who developed Kavach?
The Research Designs and Standards Organisation with Indian firms.