The WDFC is complete as of 31 March 2026. Rail freight costs Rs 1.50–1.80 per tonne-km against Rs 2.50–3.00 by road — a 48% structural cost advantage before carbon is priced at all. At Rs 87.67/litre diesel and Brent at $118/barrel, that gap is wider today than at any point in the DFC’s operational history. This article builds the full financial case for modal shift, calculates the carbon cost differential, and explains what CCTS means for logistics operators that move steel, aluminium, fertiliser and container freight across India’s two most congested freight corridors.