Alarmed by a rise in people jumping to their deaths in front of trains, some Japanese railway operators are installing special blue lights above station platforms they hope will have a soothing effect and reduce suicides.
As of November, East Japan Railway has put blue light-emitting diode (LED) lights in all 29 stations on Tokyo's central train loop, the Yamanote Line, used by eight million passengers each day.
There's no scientific proof that the lights actually reduce suicides, and some experts are sceptical it will have any effect, but others say blue light does have a calming effect on people.
