A joint feasibility study for Mumbai-Ahmedabad high speed corridor, co-financed by Indian Railways and Japan International Cooperation Agency (JICA) has been completed in July 2015.
Ministry of Railways had undertaken/completed pre-feasibility studies on 7 identified corridors. Further, the following corridors have been identified for feasibility studies for high speed rail connectivity to the four major metros and growth centers of the country: (i) Delhi-Mumbai, (ii) Mumbai-Chennai, (iii) Chennai-Kolkata, (iv) Kolkata-Delhi and both diagonals i.e. (v) Delhi-Chennai and (vi) Mumbai-Kolkata routes. Out of these, three studies have been awarded in September, 2015.
| S. No. | Corridor | Consultants |
| 1 | Delhi-Mumbai | M/s. The Third Railway Survey and Design Institute (Lead) Group Corporation- Lahmeyer International (India) Private Limited, India (Consortium) |
| 2 | Mumbai-Chennai | M/s. SYSTRA (Lead)- RITES-Ernest and Young LLP (Consortium) |
| 3 | Kolkata-Delhi | M/s. INECO (Lead)- M/s. TYPSA- Consultants and Technocrats Private Limited (Consortium) |
Further, Ministry of Railways have also decided to undertake feasibility study through Government to Government co-operation route for Delhi-Nagpur with assistance of China.
(Work on any project can start only after the sanction of project. The Mumbai-Ahmedabad high speed rail proposal has been submitted to an Empowered Committee on Innovation Collaborations chaired by Vice Chairman, NITI Aayog to suggest the way forward.
