| Northern Corridor to pass through UP, Bihar, WB | Inshorts. PM Narendra Modi has approved southern corridor of India's Bullet Train network, connecting Bengaluru, Hyderabad, Amravati and Chennai, Railway Minister Ashwini Vaishnaw said. How will the new corridors act as growth connectors? As part of the government’s long-term mobility plan, seven high-speed rail routes have been announced as “growth connectors” to promote cleaner.