Kolkata Metro has implemented a significant upgrade by replacing the steel third rails with aluminum ones, marking a first in the system's 40-year history. This change, aimed at enhancing efficiency and passenger safety, is being rolled out across various stations on the Kavi Subhash to Dakshineswar route. The switch to aluminum...
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rails promises to be environmentally friendly and energy-saving, leading to reduced operating costs. The new rails have already been installed in yard lines at Girish Park and Maidan stations, ensuring smooth train movement in these crucial sections used for maneuvering faulty trains. On September 7th and 15th, the yard line third rails were replaced. The first installation of aluminum rails on a main line used for regular passenger services took place at the Central Metro station, covering 70 meters. This upgrade is expected to improve the overall performance and stability of Metro trains. The aluminum rails are more efficient and provide better conductivity, reducing voltage drop issues. They also minimize the heat generated by friction between the rails and the third rail current connectors (TRCCs), contributing to a more controlled temperature within the tunnels. These changes are being implemented at night to avoid disruption to passenger services. The Kolkata Metro authorities anticipate that the use of aluminum rails will result in a safer, more comfortable, and cost-effective journey for passengers.