Tier IV, Inc., founded in 2015 in Tokyo, develops Autoware, an open-source software stack for self-driving vehicles.
Founded in 2015 in Tokyo, Japan, Tier IV, Inc. develops autonomous vehicle technology centered on Autoware, a full-stack software solution for self-driving systems used in urban mobility, logistics and transportation safety. It works with automotive manufacturers, technology developers and government entities, and supports the open-source Autoware Foundation, which has more than 60 partners. Akimichi Degawa and Shinpei Kato are its founders. In December 2025 the company raised an undisclosed amount in venture funding from Central Japan Railway Company.
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