Japan is taking a bold step toward the future of mobility. Deep tech innovator TIER IV has unveiled a revolutionary prototype of a self-driving taxi, designed without a steering wheel or pedals, and powered by conversational AI. The design and software architecture are being made openly available to help accelerate the adoption of autonomous transportation worldwide.
Open-Source Innovation to Speed Up Autonomous Rollouts
Known for its open-source approach, TIER IV is sharing the blueprint of its latest robotaxi prototype to inspire automakers globally. The vehicle, which resembles a minivan or people carrier, is built on a pre-existing electric vehicle platform and features a sensor layout optimized for Autoware—TIER IV’s open-source autonomous driving software.
Conversational AI Enhances Passenger Experience
One of the standout features of the prototype is its built-in conversational AI agent, powered by a large language model. This allows passengers to seamlessly interact with the system, such as by stating their desired destination upon entering the vehicle. This AI integration not only boosts convenience but also positions the vehicle for future smart city applications.
In a related development, similar advancements in voice-powered vehicle interfaces have emerged. For example, Cerence’s AI voice tech is also transforming in-car experiences, showcasing how conversational interfaces are becoming central to next-gen mobility.
Government-Backed Push for Automated Mobility
This initiative is part of a broader national strategy. Japan’s Ministry of Economy, Trade and Industry selected TIER IV for a government-backed project aimed at advancing autonomous vehicle development and supporting digital transformation in transportation. Addressing the growing challenge of driver shortages, the program emphasizes innovation in mobility solutions.
Pilots, Partnerships, and Future Plans
The prototype has already been showcased in Sagamihara, Kanagawa Prefecture, in collaboration with Central Japan Railway. TIER IV plans to conduct pilot programs and gather user data over the next few years to refine its service model and technology.
Earlier this year, the company successfully tested its autonomous system in Toyota JPN Taxi vehicles across Tokyo’s Odaiba and Nishi-Shinjuku districts. In addition, TIER IV launched a data collection initiative with Nihon Kotsu, Tokyo’s largest taxi operator, to enhance generative AI capabilities for autonomous driving solutions.
Collaborations to Expand Autonomous Tech
TIER IV is also partnering with Suzuki to develop self-driving micro cars. This collaboration follows an investment of roughly 8 billion yen, signaling the automaker’s strong commitment to next-gen vehicle technologies.
With the integration of conversational AI, open-source collaboration, and robust governmental and corporate backing, TIER IV’s prototype could become a key player in shaping the autonomous transportation ecosystem of the future.
