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Chennai Metro Phase 1: CMRL to install Anti-Drag Passenger Door feature on 52 trains – Here’s why

Chennai Metro Anti-Drag feature: Currently, CMRL’s metro trains are fitted with automatic sliding doors equipped with an obstacle detection system that identifies objects obstructing the doors during closure at stations.

3 min readOct 27, 2025 09:32 PM IST

Chennai Metro Rail has reported zero accidents due to door entrapment. (Image: CMRL)

Chennai Metro latest update: Chennai Metro Rail Limited (CMRL) is set to install Anti-Drag Features on all 52 trains operating under Phase-1. The move aims at enhancing passenger safety during train operations. For the implementation, CMRL has signed a contract for the “Design, Supply, Installation, Testing, and Commissioning of Anti-Drag Feature in all saloon doors of 52 Phase-1 trains” at a total cost of Rs 48.33 crore (including GST).

Chennai Metro to install Anti-Drag Feature on trains

“The contract is to design, supply, installation, testing and commissioning of Anti Drag Passenger Door Safety System in all the saloon doors of CMRL Phase-1 trains, as part of CMRL’s ongoing commitment to enhance passenger safety and service excellence by introducing an upgraded door safety mechanism across all the trains operating on the Blue and Green lines of Phase-1,” the Chennai Metro Rail said in a statement.

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What is Anti-Drag Passenger Door feature on Metro trains?

Currently, CMRL’s metro trains are fitted with automatic sliding doors equipped with an obstacle detection system that identifies objects obstructing the doors during closure at stations. However, the new Anti-Drag Passenger Door Safety System will further enhance passenger safety by detecting thinner objects such as sarees, bag straps, or belts that may get trapped between doors during boarding or deboarding.

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This advanced system can detect any “pull” or “drag” force. If such an item is dragged as the train begins to move, the system will automatically trigger the emergency brake and provides an instant alert to the train operator through the driver’s console for immediate action.

“While Chennai Metro Rail has reported zero accidents due to door entrapment, this upgrade is a proactive and enhanced safety measure aimed at strengthening passenger protection, particularly for women commuters, and ensuring world-class safety standards across the system. This Anti-Drag Feature will also be incorporated as a standard provision in all trains being procured under Phase 2 of the Chennai Metro Rail Project,” it said in a statement.

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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