"The toilets in trains contribute to a major chunk of open defecation which litters on railway tracks," Akhand said.
Indian Railways daily runs 8,700 trains, reaching 7,000 stations and handling 2.5 crore of passengers per day, thereby adding to the open defecation menace.
"The existing toilet system in the coaches discharges excreta directly to the ground and the railway tracks. The consequences include unacceptable hygienic conditions, particularly at railway stations," he said.
"Due to open defecation there are high risks of water-borne or sanitation-related diseases," alleged Akhand.
The petitioner urged the rights panel to issue the order to the ministry to install bio-toilets or any other advanced systems in trains to avoid open defecation.