关键词: 公路运输, 网络状态估计, 交通仿真, 收费数据, 中观交通流模型

Abstract:

With the accelerated pace of expressway construction, a series of derivative issues such as traffic safety, traffic congestion and environmental pollution also have been triggered. To acquire the real-time state of expressway network is one of the methods that can reduce congestion delays and can ensure the fast and smooth of the expressway. However, the obtaining data method is relatively simple, so the expressway network state estimation aspect still lack of scientific guidance. In this paper, the pay data of toll stations are explored, the all network state estimates can be generated by loaded dynamic OD using simulation method based on the improved traffic simulation model. The real expressway network of Shandong province is used in an example. The results show that this method can be more accurate estimate, the real-time network states, traffic flow speed, density, flow and other information can be acquired in any segment of the network, which can help expressway management department to release induced information dynamically and also can help planning detector settings.

Key words: highway transportation, network state estimation, traffic simulation, toll data, mesoscopic traffic flow model