Behavioural tricks within Japanese train stations

An interesting look at some of the behavioural tricks and nudges that have been designed into Japan’s train stations. The millions of commuters that move through them aren’t just helped by things like reliable trains or better signage, but by their own unconscious actions triggered by light and sound.

The amazing psychology of Japanese train stations
Compounding the stressful nature of the commute in years past was the nerve-grating tone—a harsh buzzer used to signal a train’s imminent departure. The departing train buzzer was punctuated by sharp blasts of station attendants’ whistles, as harried salarymen raced down stairs and across platforms to beat the train’s closing doors.

To calm this stressful audio environment, in 1989 the major rail operator JR East commissioned Yamaha and composer Hiroaki Ide to create hassha melodies—short, ear-pleasing jingles to replace the traditional departure buzzer.

Not all of the aural additions are as melodic, though.

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.

Standing outside one of Tokyo Station’s numerous exits on a recent summer day, it was easy to see the effectiveness of this deterrent in action. Weary salarymen and aged obaachan passed under the sonic deterrent without changing pace. Among uniform-clad students, however, the reactions were evident—a suddenly quickened pace, a look of confusion or discomfort, and often a cry of urusai! (Loud!) None appeared to connect the noise to the deterrents placed almost flush in the ceiling panels above.

Strange to contemplate a sound that I’ll never hear. The article links to a YouTube video of the hassha melodies, but there’s nothing about that 17 kilohertz one, unfortunately. (Or maybe there is and I just can’t hear it.)

But it’s not just the built environment that uses these behavioural tricks. The train conductors, drivers and platform attendants do too.

Why Japan’s rail workers can’t stop pointing at things
Known in Japanese as shisa kanko, pointing-and-calling works on the principle of associating one’s tasks with physical movements and vocalizations to prevent errors by “raising the consciousness levels of workers”—according to the National Institute of Occupational Safety and Health, Japan. Rather than rely on a worker’s eyes or habit alone, each step in a given task is reinforced physically and audibly to ensure the step is both complete and accurate.