The East Coast Railways has completed the installation of bio toilets in 3,247 coaches! The new toilets are fitted with an innovative ventilation system to promote better hygiene. These eco-friendly bio toilets help convert human waste into bio-gases and water in a sustainable way. They not only help ensuring cleanliness but also protect railway tracks from corrosion, said authorities. New litter bins with bio-tanks have been fitted in the toilets for dumping waste.