"We believe that this cooperation serves the interests of the peoples of Iran, Azerbaijan, and Russia and, of course, the interests of the entire region," PressTV quoted Iranian Foreign Minister Mohammad Javad Zarif as saying.
The project, research shows, will provide a cost-effective alternative to the maritime route across the Suez Canal.
The route was tested in 2014, with dry runs conducted between Mumbai and Baku, as well as Mumbai and Astrakhan indicating that transport costs could be reduced by $2,500 per 15 tons of cargo, PressTV reported.
A study, conducted by the Federation of Freight Forwarders' Associations in India showed that the NSTC would be 30 percent cheaper and 40 percent shorter than the existing routes, the Diplomat reported in May 2015.
The project was unveiled in 2000 when Russia, Iran and India signed an agreement to build the route. Other states involved in the project include Armenia, Belarus, Kazakhstan, Kyrgyzstan, Oman, Tajikistan, Turkey and Ukraine.