India’s ambitious Mumbai-Ahmedabad bullet train project has achieved a key breakthrough as China agreed to export a crucial mega tunnel boring machine (TBM), clearing a major technical and diplomatic hurdle. The development marks a significant step forward for the country’s first high-speed rail corridor, which aims to dramatically reduce travel time between the two financial hubs.
According to official sources, the mega tunnel machine—essential for boring a 21-kilometer-long undersea and underground stretch—will soon be shipped to India. The TBM, which is among the largest of its kind, is expected to expedite construction of the 508-kilometer corridor that will enable trains to travel at speeds up to 320 kmph.
The project, being executed by the National High Speed Rail Corporation Limited (NHSRCL) with assistance from Japanese Shinkansen technology, had faced delays due to global supply chain issues and geopolitical tensions. China’s initial reluctance to clear the export of key components threatened to slow down the schedule. However, recent diplomatic engagement between New Delhi and Beijing paved the way for an agreement.
Officials believe the arrival of the TBM will accelerate work on the Mumbai undersea tunnel, one of the most complex segments of the project. The bullet train is expected to cut travel time between Mumbai and Ahmedabad to just over two hours, compared to the current six to seven hours by rail.
With construction already underway in several stretches of Gujarat and Maharashtra, this clearance brings India closer to realizing its dream of high-speed rail connectivity. The first phase of operations is targeted for completion by 2028.
