 A new 500 km high speed railway is currently under construction between Mumbai and the western city of Ahmedabad (in the home state of Prime Minister Modi) at a top speed of .It will be built in standard gauge due to limitations of the technology being used by the Japanese, who are funding 80% of the project cost through a soft loan, even though this would prevent high speed trains from running on regular Indian broad gauge tracks.It is expected to carry passengers between the two cities in just three hours and ticket prices are expected to be cheaper than air planes i.e.