Allan Richarz wrote an article for CityLab titled The Amazing Psychology of Japanese Train Stations.
« Rail stations, whether in Japan or elsewhere, are also great places to see “nudge theory” at work. »
« According to a study by researchers at the University of Tokyo published in the Journal of Affective Disorders in 2013, data analyzed over a 10-year period shows an 84 percent decline in the number of suicide attempts at stations where blue lights are installed.»
« Also known as departure or train melodies, hassha tunes are brief, calming and distinct; their aim is to notify commuters of a train’s imminent departure without inducing anxiety. To that end, most melodies are composed to an optimal length of 7 seconds, owing to research showing that shorter-duration melodies work best at reducing passenger stress and rushing incidents, as well as taking into account the time needed for a train to arrive and depart. »
« To address the Japanese fear of loitering and vandalism by young riders, some train stations deploy ultrasonic deterrents—small, unobtrusive devices that emit a high-frequency tone. The particular frequency used—17 kilohertz*—can generally only be heard by those under the age of 25. (Older people can’t detect such frequencies, thanks to the age-related hearing loss known as presbycusis.) These devices—the brainchild of a Welsh inventor and also used to fend off loitering teens in the U.S. and Europe—have been enthusiastically adopted in Japan. »
« Perhaps most famously, Japanese train conductors, drivers, and platform attendants are mandated to use the “point and call” method—called shisa kanko—in executing tasks. By physically pointing at an object, and then verbalizing one’s intended action, a greater portion of the brain is engaged, providing improved situational awareness and accuracy. Studies have repeatedly shown that this technique reduces human error by as much as 85 percent. Pointing-and-calling is now a major workplace safety feature in industries throughout Japan. »