Tokyo subways and train lines have always had to deal with accidental falls and suicides. Besides the moral obligation to prevent such tragedies, railroad companies suffer enormous financial setbacks due to the high costs of clean up and temporary loss of service. With these new platform doors, lives and money can be saved.

Jumping in front of an oncoming train is and has always been an epidemic in Japan. In 2013, 600 suicides occurred in subway and train stations all over Japan, an average of almost two a day. Not only devastating to families and friends of the people that take the fatal plunge, hundreds of thousands of commuters are affected daily. Railroad companies lose millions and millions of yen, having to suspend service for commuters who depend on the world's most efficient system. Suicides aren't the only problem. Many accidentally fall onto the tracks, whether by being drunk or sometimes simply fainting.

In the last few years, more and more stations have installed doors on the platforms, making it nearly impossible to fall or jump onto the tracks. By doing this, railroad companies hope to not only prevent the loss of life of civilians, but to cut the tremendous losses they have to incur for allowing these accidents.

A win-win for all.