India’s Transport and Communication Network

A handful of corridors carry most of India’s freight and passengers — even though they make up a small share of the total network.

Must Know

• Indian Railways is the world’s fourth-largest rail network by route length, after the US, China, and Russia.
• Broad gauge lines make up the great majority of India’s rail network, now almost fully electrified.
• India’s National Highway network reached 146,204 km by August 2025 — the world’s second-largest.
• India runs 12 major ports, split evenly between the west and east coasts.
• Together, these major ports handle about 70% of India’s trade value, and 95% of its trade volume.

Good to Know

• The Golden Quadrilateral highway connects Delhi, Mumbai, Chennai, and Kolkata — part of the wider Bharatmala project.
• Indian Railways also runs its own “Golden Quadrilateral” rail routes, linking the same four cities. They carry 58% of freight and 52% of passenger traffic, on just 15% of the network.
• Major west-coast ports include Kandla, Mumbai, JNPT (Nhava Sheva), and Kochi. Major east-coast ports include Kolkata-Haldia, Paradip, Visakhapatnam, and Chennai.

Test Yourself

Great to Know

• The rail Golden Quadrilateral’s small track share, but outsized traffic share, shows how concentrated India’s economic geography really is — a handful of corridors carry most of the load.
• Road and rail networks both radiate outward from a similar set of major cities, reflecting how colonial-era and post-independence infrastructure planning reinforced the same urban centres.
• Port capacity, more than road or rail length alone, often decides how competitive Indian exports are — congestion at a single port can ripple through an entire supply chain.