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Railways commissions Kavach 4.0 on 738 Route km to boost safety on Delhi-Mumbai & Delhi-Howrah lines

Kavach 4.0 railways, Delhi-Mumbai rail safety: Kavach aids the Loco Pilot in running of trains within specified speed limits by automatic application of brakes in case Loco Pilot fails to do so and also helps the trains to run safely during inclement weather.

3 min readUpdated: Dec 5, 2025 04:21 PM IST

Kavach 4.0 railways: The Kavach is a highly technology intensive system, which requires safety certification of highest order (SIL-4).

Kavach railway project, Delhi-Mumbai rail safety: To enhance safety, Indian Railways (IR) is installing Kavach 4.0, an indigenously developed, upgraded version of Automatic Train Protection (ATP) system, in a phased manner on the country’s two busiest rail corridors: Delhi–Mumbai and Delhi–Howrah. The Kavach is a highly technology intensive system, which requires safety certification of highest order (SIL-4).

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Railway Kavach news

Approved by RDSO on July 16, 2024, the Kavach version 4.0 covers all the major features required for the diverse railway network. Major improvement in Version 4.0 includes increased Location Accuracy, Improved Information of Signal Aspects in bigger yards, Station to Station Kavach interface on OFC and Direct Interface to existing Electronic Interlocking System. With these improvements, Kavach Version 4.0. is planned for large scale deployment over Indian Railways.

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Kavach 4.0 news

In a written reply in the Rajya Sabha on December 5, Railway Minister Ashwini Vaishnaw provided the latest update on the implementation of Kavach 4.0. He said that Kavach 4.0 has been installed on Palwal – Mathura- Nagda section (633 Rkm) on Delhi – Mumbai route and Howrah–Bardhaman section (105 Rkm) Delhi – Howrah route.

“After extensive and elaborate trials, Kavach Version 4.0 has been successfully commissioned on 738 Route km on Palwal – Mathura- Nagda section (633 Rkm) on Delhi – Mumbai route and Howrah–Bardhaman section (105 Rkm) Delhi – Howrah route. Kavach implementation has been taken up in balance sections of Delhi – Mumbai & Delhi – Howrah corridors,” Vaishnaw added.

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Progress of key items of Kavach on High density routes including Delhi– Mumbai & Delhi– Howrah corridors are as under:

Laying of Optical Fibre Cable

7129

Installation of Telecom Towers

860

nos

iii

Provision of Kavach at Stations

549

nos

Installation of Track side equipment

2674

RKm

Provision of Kavach on Locos

4,154

nos

Source: As per written statement by Railway Minister Ashwini Vaishnaw in Rajya Sabha on December 5, 2025

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Apart from these, the Union Minister also stated that track side Kavach implementation work has been taken up on 15,512 RKm covering all Golden Quadrilateral, Golden Diagonal, High Density Network and identified sections of Indian Railways.

“Bids have been invited for equipping another 9,069 locomotives with Kavach version 4.0. Kavach is being provided progressively in a phased manner in locomotives,” the minister said.

Anish Mondal

Anish Mondal is a journalist with over nine years of experience covering the railways and roadways. Currently a member of the Indianexpress.com editorial team, Anish specializes in high-impact sectors. Professional Journey Anish began his career at the public broadcaster Rajya Sabha Television (now Sansad TV), where he developed a foundational understanding of legislative processes and national governance. In 2018, he transitioned to digital financial journalism at FinancialExpress.com, spending nearly six years refining his expertise in market trends and corporate reporting. Before joining The Indian Express in 2025, he served as a key contributor at ETNowNews.com. Education & Expertise Anish’s reporting is backed by a rigorous academic background in communication and the humanities: Master of Journalism and Mass Communication (MJMC) – Apeejay Stya University Post Graduate Diploma in Journalism and Production (PGTVRJP) – Apeejay Institute of Mass Communication Bachelor of Arts (English Honours) – University of Calcutta Areas of Coverage Connectivity: Detailed reporting on the expansion of Indian Railways and National Highway networks. ... Read More

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