The Delhi Metro Rail Corporation (DMRC) has begun process to buy nearly 500 train coaches for the phase-III. It has floated global tenders to buy trains that would have several new features and will be more faster and less noisier than the existing ones.A total of 81 six-coach trains will be assembled from these 486 cars and they will be put on Line 7 ( Mukundpur-Yamuna Vihar) and Line 8 (Janak Puri West-Kalindi Kunj). Once the trains are assembled, 52 will be for Line 7 and 29 for Line 8.Delhi Metro's Phase-III envisages bringing another 103 km under the Metro map and is expected to be completed by 2016. The coaches will start arriving from later half of 2014 and will be put in service after commissioning.