Diesel locomotive break down. Hydraulic transmission for locomotives was developed in Germany. There is still debate over the relative merits of hydraulic vs. electrical transmission systems: advantages claimed for hydraulic systems include lower weight, high reliability, and lower capital cost. By the 21st century, for diesel locomotive traction worldwide the majority of countries used diesel–electric designs, with diesel hydraulic designs not found in use outside Germany and Japan, and some neighbouring states, where it is used in designs for freight work. In Germany and Finland, diesel–hydraulic systems have achieved high reliability in operation. In the UK the diesel–hydraulic principle gained a poor
Diesel Locomotive Factory, Marhowra Ministry of Railways had received bids from six global firms: Siemens, Alstom, Bombardier, General Electric, CSR Corp and CNR Corp. However, Indian Railways rejected the bid of both Chinese firms (CSR and CNR) for the two giant manufacturing projects in Bihar. In January 2014, the Union Cabinet gave its approval for setting up Electric Locomotive Factory in Madhepura and Diesel Locomotive Factory (DLF) in Marhowra at an approximate cost of and respectively. On November 9, 2015, the Ministry of Railways awarded the contracts for Madhepura project and Marhaura project to Alstom and General Electric respectively in a collective amount of