Asian Development Bank has approved 500 million dollar loan to help India improve rail services. According to official release the bank has approved a multi-tranche financing facility for the Railway Sector Investment Program, RSIP. It will target freight and passenger routes in Chhattisgarh, Odisha, Maharashtra, Karnataka and Andhra Pradesh, including the critical Golden Quadrilateral corridor that connects Chennai, Kolkata, Mumbai and New Delhi. The RSIP is being carried out by the Ministry of Railways and will end by December 2018.