关键词: 交通工程, 宏观基本图, 网络交通管理, 线圈检测器布设

Abstract: Recently, it has been found that Macroscopic Fundam ental Diagrams(MFDs) exist in large urban networks. MFDs can be used to estimate the level of service of road networks and the network wide traffic management is also based on the concept of MFD. Although traffic data on freeways are collected by detectors distributed each 500 meters along almost all freeways, empirical traffic data of the urban area are in general insufficient to study MFDs. It is also very expensive and almost impossible to build loop detectors on all links of the network. Therefore, in order to collect sufficient traffic data to draw accurate MFDs in the urban network under the limited financial budget, the questions which types of links should be selected to build loop detectors should be resolved. The critical links on urban road in Amsterdam are put forward on the basis of Vissim, which provides theoretic foundation of locating loop detectors.

Key words: traffic engineering, macroscopic fundamental diagram (MFD) , network wide traffic management, loop detector location