Published: 11 March 2026DD NewsEconomy
Kavach 4.0 Commissioned on 1,452 Route Km of Delhi-Mumbai and Delhi-Howrah Rail Corridors
Indian Railways' indigenous Automatic Train Protection system Kavach 4.0 has been successfully commissioned across 1,452 route kilometres on the high-density Delhi-Mumbai and Delhi-Howrah corridors. Kavach uses RFID tags, on-board equipment, and radio towers for real-time communication to prevent Signal Passing at Danger (SPAD), control overspeeding, and ensure safety in adverse weather.
Key features of version 4.0 include enhanced location precision, direct Electronic Interlocking integration, optical fiber and UHF radio connectivity, automatic braking, and an SOS facility. Consequential train accidents have declined from 135 in 2014-15 to 14 in 2025-26 (up to Feb 2026), a ~90% reduction.
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Q: Indian Railways' indigenous Kavach 4.0 has been commissioned on 1,452 route kilometres. Examine its role in accident reduction and technological self-reliance in rail safety.
Answer (50 words):
Kavach 4.0, the indigenous Automatic Train Protection system, has been commissioned on 1,452 route kilometres across the Delhi-Mumbai and Delhi-Howrah corridors. Using radio-frequency identification tags, on-board equipment and radio towers, it prevents Signal Passing at Danger. Consequential accidents fell from 135 in 2014-15 to 14 in 2025-26, a 90 percent reduction.
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Linked questionMedium
Kavach 4.0, Indian Railways' indigenous Automatic Train Protection system, was commissioned across how many route kilometres on the Delhi-Mumbai and Delhi-Howrah corridors?
Explanation · Correct answer CKavach 4.0 was commissioned across 1,452 route km on the Delhi-Mumbai and Delhi-Howrah high-density corridors. It uses RFID tags, on-board equipment, and radio towers to prevent Signal Passing at Danger (SPAD) and control overspeeding.
Frequently asked questions
What is Kavach 4.0 and on which railway corridors has it been commissioned?
**Kavach 4.0** is Indian Railways' indigenous **Automatic Train Protection (ATP)** system commissioned on **1,452 route kilometres** of the **Delhi-Mumbai and Delhi-Howrah corridors**. It uses RFID tags, on-board equipment, and radio towers to prevent Signal Passing at Danger (SPAD).
What are the key new features of Kavach 4.0 compared to earlier versions?
**Kavach 4.0** features: **enhanced location precision**, **Electronic Interlocking integration**, **optical fiber and UHF radio connectivity**, **automatic braking**, and **SOSR (SOS on Radio)** emergency broadcast — covering **1,452 route km** of key high-density corridors.
By how much has Kavach reduced consequential train accidents in India since 2014?
Consequential train accidents fell ~**90%** — from **135 in 2014-15** to **14 in 2025-26** (up to February 2026). **Kavach 4.0** is deployed on **1,452 route km** across Delhi-Mumbai and Delhi-Howrah corridors.
What is SOSR emergency broadcast in Kavach 4.0 railway safety system?
**SOSR (SOS on Radio)** is a new feature in **Kavach 4.0** enabling real-time emergency broadcast across the train protection network. Kavach 4.0 covers **1,452 route km** on Delhi-Mumbai and Delhi-Howrah corridors with ~**90%** reduction in accidents since 2014-15.
What is Signal Passing at Danger (SPAD) and how does Kavach 4.0 prevent it?
**SPAD** occurs when a train crosses a red signal, risking collisions. **Kavach 4.0** prevents SPAD via **RFID tags, on-board equipment, radio towers**, and **automatic braking**, deployed on **1,452 route km** of Delhi-Mumbai and Delhi-Howrah corridors.
