Kazunori Nakajima focused on configuration management for the tier4/autoware_launch repository, addressing safety concerns in the planning module. He updated the default behavior of dynamic obstacle avoidance by modifying the YAML-based default_preset configuration, disabling the feature by default to reduce unintended maneuvers and improve deployment predictability. This change was carefully documented in the commit history, providing clear rationale and preserving the ability for users to opt in via presets. Working exclusively with YAML and configuration management principles, Kazunori’s targeted patch enhanced the safety and reliability of standard deployments, reflecting a thoughtful approach to risk mitigation in autonomous vehicle software.