Tokyo’s public transportation is a global gold standard, blending precision and convenience to serve millions daily. Yet, even this system has its gaps, like the 800-meter divide between JR/Tokyu’s Kamata Station and Keikyu Kamata Station in Ota Ward. This small but bothersome distance has long challenged commuters and travelers heading to Haneda Airport. On October 3, 2025, Japan’s Ministry of Land, Infrastructure, Transport and Tourism (MLIT) approved the “Rapid Transit Improvement Plan” for the “New Airport Line,” officially named the Kama Kama Line (蒲蒲線, read as Kama Kama Sen). Led by Tokyu Corporation and the Haneda Airport Line, a public-private venture with Ota Ward, this ¥125 billion (approximately $800 million USD) project aims to open between 2038 and 2042, promising seamless airport access and enhanced urban connectivity.
Overview of the Kama Kama Line (蒲蒲線)
The Kama Kama Line will link JR/Tokyu Kamata Station with Keikyu Kamata Station, eliminating the current need for a 10–15-minute walk or bus ride. By undergrounding a portion of the Tokyu Tamagawa Line just before Kamata, a new underground Tokyu station will connect directly to Keikyu Kamata. This allows through-service from the Tokyu Toyoko Line—serving Shibuya and Yokohama—straight to Keikyu Kamata and Haneda Airport’s terminals. A standout benefit: the journey from Jiyugaoka to Keikyu Kamata will drop from 37 minutes to just 15. With up to 20 trains per hour during morning rush and 10 in off-peak periods, the line will cater to both locals and tourists efficiently.
Why Now? Context and Significance
Haneda Airport, Japan’s busiest domestic hub and a key international gateway, handles over 80 million passengers yearly. While closer to central Tokyo than Narita, its rail access involves inconvenient transfers at Kamata. The Kama Kama Line resolves this, aligning with Japan’s push for sustainable urban mobility and tourism growth, especially ahead of events like the 2025 Osaka Expo. By promoting rail over car use, it supports environmental goals and embodies Japan’s “kaizen” philosophy of continuous improvement. For international visitors, this means easier trips to Tokyo’s vibrant neighborhoods—think Shibuya’s nightlife or Asakusa’s temples—without the hassle of dragging luggage through crowded stations.
Japanese Reactions and Perspectives
Japanese reactions, drawn from recent online discussions, mix enthusiasm with cautious pragmatism. Ota Ward residents and rail fans are excited, with comments like “No more trudging between stations!” reflecting relief over improved airport access. Many see it boosting local economies in a district of 730,000. However, the 2038–2042 timeline sparks skepticism, with quips like “Will I be around to ride it?” Costs are a concern—some fear high fares or taxpayer burdens if the line underperforms. Construction risks, like unearthing WWII-era unexploded ordnance in this historically bombed area, and potential disruptions to Toyoko Line schedules also stir debate. One user called it a “limited airport line,” questioning its scope without broader network integration. Despite this, pride in Japan’s infrastructure prevails, with many viewing it as a step toward a more connected Tokyo.
Global Impact
For global travelers, the Kama Kama Line enhances Tokyo’s appeal as a top destination. Haneda’s 30-minute proximity to the city center already trumps Narita, and this line will make it even more attractive. It supports eco-friendly tourism by reducing taxi reliance, appealing to sustainability-conscious visitors. In a post-pandemic world, efficient transit reassures health-focused travelers. Whether you’re a backpacker chasing Tokyo’s culture or a business traveler rushing to meetings, the Kama Kama Line promises a smoother start.
Frequently Asked Questions (FAQs)
What is the Kama Kama Line?
The Kama Kama Line (New Airport Line) is a rail link connecting JR/Tokyu Kamata Station to Keikyu Kamata Station, simplifying Haneda Airport access without transfers.
When will the Kama Kama Line open?
It’s targeted for 2038–2042, following urban planning and construction, though some locals express frustration over the long wait.
How will it improve Haneda Airport travel?
Direct service from Shibuya via the Tokyu Toyoko Line will cut times, like Jiyugaoka to Keikyu Kamata from 37 to 15 minutes, easing airport commutes.
What are local concerns?
Japanese residents worry about the ¥125 billion cost, potential fare hikes, construction disruptions, and impacts on existing train schedules, though long-term benefits are widely expected.
Conclusion
The Kama Kama Line is more than a rail project—it’s a symbol of Tokyo’s relentless pursuit of improvement. Blending meticulous planning with community focus, it will make the city more accessible for millions. Keep tabs on this development; it could redefine your next Tokyo trip.
