
The bluetooth system has been designed to help pregnant women secure a seat on the train.
For such a polite and thoughtful society, one thing that often baffles visitors to Japan is the reluctance of passengers to relinquish their seats on the train. There may be several explanations for this, related to societal rules which respect order in regards to queues, and the fact that elderly passengers who dislike having the “old” tag slapped on them have berated schoolchildren for giving up their seats for them. However, when it comes to pregnant women, seated passengers should know to give up their seats as a common courtesy.
▼ Despite this request in the priority seat sections of train carriages in Japan, it’s never guaranteed that anyone will give up their seat.
To make sure people are aware of their condition, expectant mothers wear a pink-and-white “Baby on Board” keychain given to them by their local clinics and also available from train station offices. Despite standing in the priority seat section and prominently displaying the keychains on their bags, however, it’s never a certainty that someone will be nice enough to give up their seat for them.
▼ According to a 2014 survey, more than 60 percent of Japanese men said they had never heard of the “Baby on Board” maternity mark badges.
Considering all these factors, the new “Pink Light” system trialled in South Korea recently might be a perfect fit for the Japanese transportation network. The set-up requires women to carry a sensor that sends a wireless signal which activates a pink light located in the priority seat section, alerting passengers to the fact that there’s a pregnant woman nearby. The non-waterproof pendant sensor has a battery-life of at least six months and works best when carried outside of pockets, which makes them better suited to being used on bags.
▼ There’s no excuse for not knowing what this symbol represents.
The system, which was tested over a five-day period in the city of Busan by 500 pregnant women, came about as a joint collaboration between local businesses and the city council, with the Mayor, Suh Byung-soo, expressing his support for the comfort and care of pregnant women using local transport. The viability of the project and its future remains under wraps for now, but with a dedicated website and pendant applications forms currently available online, we hope to see this project expand to other countries like Japan in the near future.
To see exactly how the system works, take a look at the short video below.
Source: Pink Light, BBC News
Top Image: YouTube/Dynamic Busan
Insert Images: Transportation Bureau (City of Yokohama), Mokosoft, YouTube/Dynamic Busan
[ Read in Japanese ]




Messaging app LINE experiments with service to help pregnant women find seats on trains
Should healthy young men sit in Japanese trains’ priority seats for the elderly and pregnant?
Video of foreign diplomat riding in Tokyo subway priority seat sparks manners debate【Video】
10 times Japanese train passengers aren’t so polite【Survey】
Tokyo government teams up with Japanese rapper to promote roller coaster subway system【Video】
Pokémon and Ikea Japan cross over into each other’s worlds with collaboration events
Can a downtown Tokyo super sento bathhouse beat a hotel for a one-night stay?
Two food hacks take Japan’s convenience store fried chicken to amazing new sandwich heights
Licca-chan dolls released in North America for first time in nearly 60 years
The heartwarming story of Japan’s “Weakling Gundam” and the fans who supported it in its hour of need
Does this video about an abandoned dog leave you wiping your eyes or shaking your fist?
Tokyo Police shows a clever way to conserve water in a disaster and impress children with magic
How to make a Big Mac in Tokyo at a fraction of the price with minimal effort【SoraKitchen】
Hayao Miyazaki gifts autographed Ghibli anime cel to president of France[Photo]
The U.K. thinks Japanese curry is katsu curry, and people aren’t happy about it
Famous Tokyo cherry blossom spot installs view-blocking screens to fight overcrowding[Video]
Tokyo’s best museum for foreign travelers finally reopens after being closed for four years
Pokémon lacquerware series expands for Year of the Horse with new handcrafted design[Video]
Japan now has a special desk for people who work at home with a pet cat[Photos]
Uniqlo announces new T-shirts for One Piece, Naruto and more for manga publisher’s 100th birthday
Picturesque Tokyo park plays host to millions of flowers and soap bubbles this spring
Tokyo subway and almost all Tokyo train lines now accepting credit card tap payments
Totoro and Calcifer become little light-up lanterns for Ghibli-style excursions or at-home decor
Fading Tokyo – Searching for signs of the Showa era as local neighborhoods evolve[Photos]
Train station platform ramen store closes its doors on half a century of history in Tokyo
Starbucks Japan releases new My Fruit³ Frappuccino at only 34 stores around the country
Studio Ghibli releases Catbus pullback keychain that runs like the anime character
Krispy Kreme releases Super Mario doughnuts in Japan for a limited time
Japanese onsen egg maker from 100-yen store Daiso needs to be on your shopping list
Starbucks Japan unveils new sakura cherry blossom collection for hanami season 2026
Survey asks foreign tourists what bothered them in Japan, more than half gave same answer
Japan’s human washing machines will go on sale to general public, demos to be held in Tokyo
Starbucks Japan releases new drinkware and goods for Valentine’s Day
We deeply regret going into this tunnel on our walk in the mountains of Japan
Studio Ghibli releases Kodama forest spirits from Princess Mononoke to light up your home
Starbucks Japan releases new sakura goods and drinkware for cherry blossom season 2026
Japan’s newest Shinkansen has no seats…or passengers [Video]
Major Japanese hotel chain says reservations via overseas booking sites may not be valid
Put sesame oil in your coffee? Japanese maker says it’s the best way to start your day【Taste test】
No more using real katana for tourism activities, Japan’s National Police Agency says
Four things our new-mother reporter felt riding the Tokyo subway with her baby
10 types of people Japanese women hate sitting next to on public transportation【Video】
42 reasons why we love riding the rails in Japan