The correct answer is South Western Railway.

• South Western Railways Zone has introduced biodiesel for trains, operating under its zone. 
• South Western Railways Zone is headquarters in Hubli, Karnataka. 
• First train Hubballi-Bengaluru Janshatabdi Express powered by 5% biodiesel blended with High-Speed Diesel was flagged off from Hubli.
• Indian Railways initially attempted blending of High-Speed Diesel (HSD) with Bio-Diesel extracted from the Jatropha plant. Jatropha oil had been used in India as biodiesel in remote rural and forest communities; Jatropha oil can be used directly after extraction i.e. without refining in diesel generators and engines. 
• Indian Railways have also set up an Indian Railways Organization for Alternate Fuels (IROAF) to promote Bio-Diesels and other environmentally benign alternate fuels.
• Bio-Diesel is a type of fuel that provides energy for cleaner alternatives as sustainable fuel for diesel locomotives and reduces dependency on fossil fuel especially diesel.

• The management and governance of the Indian Railway are in the hands of the Railway Board.
• The Indian Railway network is divided into 18 zones.

• The Konkan Railway is operated by the Konkan Railway Corporation- is a Union Government Company. Its headquarters is in Navi Mumbai.
• "Train-18" also known as Vande Bharat Express is India's first indigenously designed higher-speed rail intercity electric multiple units made under the Indian government's Make in India initiative.
• The first rail in India was started on 16 April 1853, from Bombay to Thane.