Problem solution for making probe-vehicle data as foundational traffic information source

随着信息通信技术的发展，一种从行驶在路网上的车辆中采集交通信息的探测车系统受到了人们的关注。特别是，探测车系统具有许多优点；例如，系统可以采集探测车辆巡航的所有路段的交通信息，获取车辆加速度、巡航路线等各种信息。然而，广域探测车系统的实施需要解决很多问题；将可用性描述为交通信息，并建立有效收集和提供信息的方法。针对上述问题，本研究开发和研究了几种技术。首先，为了展示探测车辆数据作为交通语调的可用性，开发了基于探测车辆数据的路线引导系统。与市场上更多的导航系统进行了竞争性试验，结果显示了探测车数据利用的优越性。此外，通过通勤情况下的路径引导实验，验证了所开发系统的路径引导效果。其次，建立了有效利用探测器车辆数据的各种方法。特别是，该研究表明，探测车辆数据使我们能够对驾驶员路线点行为进行细致的分析，能够充分反映协调信号控制的效果，能够识别交通事故的常见地点，并且可以利用探测车辆数据更新动态O-D矩阵。此外，本研究还检验了数据收集效率的提高。在明确了探测数据采集频率对大规模探测系统实施的重要影响后，开发了几种利用不频繁探测车辆数据的技术，并给出了最优定位。研究了探测器飞行器问题。通过本课题的研究，解决了广域探测车系统实现中的许多问题。少

With the development of the information and communication technology, a probe car system that collects traffic information from the vehicles cruising on the road network is attracting attention. Particularly, probe-vehicle system has many advantages ; e.g. the system can collect traffic information from all road sections where the probe-vehicle cruises, obtain various information such as vehicular acceleration and cruising route, and so on. However, it is necessary for implementation of wide-area probe-vehicle system to solve a lot of problems ; presentation of usability as traffic information and establishment of method for utilization and for effectively gathering information and provision of information. This research developed and investigated several technologies in response to above problems.First, to present a usability of probe-vehicle data as traffic intonation, the route guide system using the probe-vehicle data was developed. The result of competitive experiment with the nav … More igation systems in the market showed the superiority of utilization of probe-vehicle data. In addition, the effect of route guidance of the developed system was shown from the route guidance experiment in commuting situation. Second, various methods for effective utilization of probe-vehicle data were established. Especially, this research showed that probe-vehicle data enables us to analyze drivers' route dots behavior to the last detail, to vent/ the effects of coordinated signal control, to identify the common site of traffic accidents and the probe-vehicle data can be utilized for updating dynamic O-D matrices. Furthermore, this research examined that the efficiency improvement of the data collection. After clarifying that the probe data collection frequency has a significant influence on the implementation of the large scale probe system, several techniques for using infrequent probe-vehicle data were developed and the optimal location .problem of probe-vehicle was studied. A lot of problem for the implementation of a wide-area probe-vehicle system were solved by executing this research. Less