Kolkata stands out as the only city in India hosting three railway zonal headquarters. The city is home to the Eastern Railway, South Eastern Railway, and Metro Railway Kolkata. Eastern Railway serves the eastern region, while South Eastern Railway plays a crucial role in freight movement. Metro Railway Kolkata, established as an independent zone in 2010, focuses on urban transit. This concentration of zonal headquarters makes Kolkata a significant nerve center in India's vast railway network. The city's strategic importance is underscored by its role in managing key train operations and infrastructure across different regions.
Source: India TV News, Testbook, Byju's.