将交通仿真与4D虚拟城市结合，实现真实感可视化与听觉反馈。
Bridging the Gap between Micro-scale Traffic Simulation and 4D Digital Cityscapes
- 用C++管道同步车辆数据，驱动虚幻引擎5中的高保真城市渲染
- 用户研究显示仿真与感知高度一致，能准确识别安全风险
- 加入空间音频后提升安全感，凸显多模态的重要性
微观交通仿真虽为城市规划提供关键数据，但常缺乏高保真可视化或听觉化以有效传达给利益相关方。本文提出一个实时4D可视化框架，将SUMO交通仿真与虚幻引擎5中基于地理信息的苏黎世高精度虚拟场景耦合。架构采用稳健的C++数据管道实现车辆同步渲染，并通过开放声音控制（OSC）接口支持外部听觉化引擎。通过用户研究验证框架有效性，结果表明仿真动态与人类感知高度一致，用户能正确识别安全风险。此外，空间化音频显著影响用户安全感，凸显多模态在交通仿真中的重要性。
原文摘要 · Abstract (English)
While micro-scale traffic simulations provide essential data for urban planning, they are rarely coupled with the high-fidelity visualization or auralization necessary for effective stakeholder communication. In this work, we present a real-time 4D visualization framework that couples the SUMO traffic with a photorealistic, geospatially accurate VR representation of Zurich in Unreal Engine 5. Our architecture implements a robust C++ data pipeline for synchronized vehicle visualization and features an Open Sound Control (OSC) interface to support external auralization engines. We validate the framework through a user study assessing the correlation between simulated traffic dynamics and human perception. Results demonstrate a high degree of perceptual alignment, where users correctly interpret safety risks from the 4D simulation. Furthermore, our findings indicate that the inclusion of spatialized audio alters the user's sense of safety, showing the importance of multimodality in traffic simulations.
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