TIER IV secures Level 4 certification for Shiojiri autonomous bus route
TIER IV received Level 4 certification for AI Pilot on an autonomous bus route in Shiojiri, Japan.

Evidence notes
- The certification covers AI Pilot powering an autonomous bus route between Shiojiri Station and Shiojiri City Hall.
- TIER IV described AI Pilot as combining Autoware, sensors, compute and infotainment modules.
- The approved operating design domain included service up to 35 km/h on the specified Shiojiri route.
Company context
TIER IV develops open-source autonomous-driving software, reference designs and deployment services around the Autoware ecosystem. Its stack covers perception, planning, control, vehicle integration, simulation and fleet operations for passenger, logistics and specialised vehicles. The company works with regional operators and manufacturers to build repeatable autonomous-mobility systems rather than a single vehicle fleet.