In this work, we propose a new approach to road modeling and 3D traffic simulation. Based on the raw geographic information system (GIS) data laid out as sparse polylines with attributes, we compute a more adequate functional description for real-time simulation of on-road vehicle animation. The proposed approach begins with a filtering/subdivision module where the raw polylines are transformed into a graph of functional road segments as arcs and the nodes as intersections. Then, the vehicle speed profile is computed based on its dynamics, its neighborhood and the curvature profile of the road. Afterward, a multi-agent system is proposed in order to handle a large number of simulated vehicle/driver couples. Finally, we deploy a 3D rendering engine to display the computed 3D simulation on screen. The resulting model satisfies most of the real road features for traffic simulation including road interchanges, roundabouts, intersections, lanes, etc. More importantly, the simulated driving qualitatively mimics the real behavior of the drivers/vehicles on the road as can be seen in the accompanying video (RTSP video). We also validate our findings with a technical assessment based on macroscopic and microscopic traffic simulation metrics in several road traffic scenarios.

中文翻译：

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用于实时交通模拟的原始 GIS 到 3D 道路建模

在这项工作中，我们提出了一种新的道路建模和 3D 交通模拟方法。基于以具有属性的稀疏折线形式布置的原始地理信息系统 (GIS) 数据，我们为道路车辆动画的实时模拟计算了更充分的功能描述。所提出的方法从过滤/细分模块开始，其中原始折线被转换为功能路段作为弧线和节点作为交叉点的图形。然后，根据车辆的动力学、其邻域和道路的曲率曲线计算车速曲线。之后，提出了一种多代理系统，以处理大量模拟的车辆/驾驶员夫妇。最后，我们部署了一个 3D 渲染引擎来在屏幕上显示计算出的 3D 模拟。由此产生的模型满足交通模拟的大部分真实道路特征，包括道路立交桥、环形交叉路口、交叉路口、车道等。更重要的是，模拟驾驶定性地模仿了道路上驾驶员/车辆的真实行为，如在伴随视频（RTSP 视频）。我们还通过基于多个道路交通场景中的宏观和微观交通模拟指标的技术评估来验证我们的发现。