KDDI and Michinori HD to run AI-based network optimization trial for autonomous buses

This trial builds on KDDI's broader rollout of AI-based network optimization technology, which the company and its research institute began introducing to base stations nationwide in February 2026. That earlier deployment reportedly improved communication stability by 25% and cut optimization work time by over 95%. The Hitachi trial applies this same technology to a specific use case: autonomous buses operating under Level 4 automation, where remote monitoring is mandatory. The Hitachi BRT route has been running Level 4 autonomous service since February 2025 over a 6.1 km stretch, while the Omika loop route has been testing Level 2 automation since January 2025. By applying AI-driven network tuning in this setting, the companies aim to verify whether communication quality improvements can reduce the burden on remote monitoring staff. If successful, the approach could support autonomous bus operations without requiring expensive new telecom infrastructure, potentially addressing driver shortages and underserved transport areas.