Delhi Metro Rail Corporation has reported progress on its Delhi MRTS Project of Phase-III in the city. As of May 2015, DMRC has invited bids for supply, installation, testing and commissioning of ballastless track of standard gauge, additional corridor of sections of Mundka-Bahadurgarh (line-5 extn) & Dwarka-Najafgarh in elevated and underground sections along with ballasted / ballastless tracks in depots at Bahadurgarh & Najafgarh .