Biology will replace gravity. Russian Railways has promised to get rid of train cars with traditional toilets.

Russian trains will soon be eliminating gravity toilets—traditional toilets where the rails were visible when the pedal was pressed. Along with their disappearance, the concept of a "sanitary zone" will likely disappear.

"There are only a few carriages with gravity toilets left in the Russian Railways fleet, and within the next few years they will disappear completely."- сообщил Deputy General Director of the company Ivan Kolesnikov.

The first toilets on trains появились in 1863, and the outdated "model" of toilets survived until the 2010s. Toilets with a vacuum system and composting toilets began to be introduced in 2009 on Sapsan trains running between Moscow and St. Petersburg.

According to Kolesnikov, carriages with outdated toilet systems are already "very few in number." Within the next few years, carriages with such sanitary equipment will cease to operate on Russian railways. Currently, they are used for "some occasional trips."

Internet users did not fail to do so joke about the news: "'Gravity Toilet'—and they'll come up with a name so darn good that Rusnano should be able to spend a billion or two on its development," "They'll ask the government for money to combat gravity," "They'll weld the hole shut. You can get a bucket (for a deposit) and bleach (for an extra fee) from the conductor."