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In light of the train accident that occurred in Odisha on 2 June 2023, concerns have been raised regarding the safety of the single system utilized by the Indian Railways. This particular interlocking system has been under discussion in India since March 2022, when the Hitachi Group, in collaboration with the Indian Railways, announced the design of Asia's largest electronic interlocking system for the Kharagpur railway line, emphasizing its robustness and reliability.
Railway systems play a crucial role in global transportation, providing a convenient and efficient mode of travel. As the demand for rail services continues to grow, ensuring safety and efficiency becomes paramount. The implementation of an electronic interlocking system is a significant factor in achieving these objectives. This article aims to explore the Electronic Interlocking System of Railways, its importance, benefits, and its role in enhancing safety and efficiency.
What is the Electronic Interlocking System, and why is its failure believed to be the cause of the Odisha rail accident?
The Electronic Interlocking System is a software-based logic system that operates through a chain of command. It is a sophisticated signaling technology employed in railway networks to control train movements at junctions, crossings, and stations. Unlike traditional mechanical interlocking systems that rely on physical levers and rods, electronic interlocking systems utilize computer-based technology to manage and coordinate train movements.
Components of an Electronic Interlocking System
The Electronic Interlocking System consists of several essential components. Firstly, there are track circuits that detect train presence and provide information to the system. Secondly, signals are utilized to instruct train drivers on whether to proceed or stop. Additionally, point machines play a crucial role in controlling track alignment, ensuring trains follow the correct routes. Lastly, the central interlocking unit processes information and coordinates the functioning of all the system's components.
Why did the Coromandel Express train enter the loop line where another train was already present?
According to top railway officials, while the electronic interlocking system is considered error-free, the possibility of human intervention in the accident cannot be ruled out. A special team has been formed to investigate the incident and determine the causes. Based on the information gathered thus far, it has been identified that the Shalimar Chennai Coromandel Express (12841) train received an incorrect green signal instead of the expected yellow or red signal, which contributed to the accident.
However, it is important to note that one accident cannot undermine the entire system, and the Indian Railways must strive to enhance the sustainability and mobility of their system with the aid of modern technologies such as electronic interlocking systems.
Furthermore, despite the accident, the Indian Railways has not witnessed a decline in ticket sales, and the railway track has since been reopened for operation. Though In the aftermath of the Odisha rail tragedy, it becomes imperative to investigate the role of electronic interlocking systems in ensuring rail safety.
