Get latest articles and stories on India at LatestLY. The proposed high-speed railway corridor between Delhi and Varanasi has hit a roadblock with the Railway Board rejecting the feasibility report on the project citing multiple curves along the route which will not be suitable for a bullet train to run at 350 kmph, sources said. India News | Delhi-Varanasi Bullet Train Project Hits Roadblock, Railway Board Rejects Feasibility Report.