National
Indian Railways plans to four-lane about 11,000 km of High-Density Network; Kavach 4.0 on 2,490 route km
Indian Railways intends to four-lane roughly 11,000 km of its High-Density Network (HDN) to raise capacity and ease congestion. Its seven high-density routes, Delhi–Howrah, Howrah–Chennai, Chennai–Mumbai, Mumbai–Delhi, D...