Worked on enhancing the visual fidelity of vehicle models in the tier4/AWSIM repository by updating Van.fbx textures and refining vertex-to-material assignments. Focused on improving realism within the simulation environment, the work involved applying advanced 3D modeling techniques and asset management workflows to ensure accurate material mapping and texture quality. Utilized C++ and FBX file formats to manage and implement these changes, supporting more realistic scenario evaluation and user engagement. No major bugs were reported or addressed during this period, allowing for concentrated development on feature delivery and asset iteration, as documented in the associated version-controlled commits.