After going for the ‘engineering, procurement and construction’ route to redevelop New Delhi, CST Mumbai and Ahmedabad stations, Indian Railways is looking to go back to its public private partnership (PPP) plan for upgrading 16 stations, including those in Anand Vihar, Nizamuddin, Old Delhi, Vijayawada, Dadar and Kalyan.After going for the ‘engineering, procurement and construction’ route to redevelop New Delhi, CST Mumbai and Ahmedabad stations, Indian Railways is looking to go back to its public private partnership (PPP) plan for upgrading 16 stations, including those in Anand Vihar, Nizamuddin, Old Delhi, Vijayawada, Dadar and Kalyan.