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

随着信息和通信技术的发展，从路网中行驶的车辆中收集交通信息的探测车系统正受到人们的关注。特别是，探测车系统具有许多优点，例如，该系统可以收集探测车巡航的所有路段的交通信息，获得车辆加速和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许多问题：将可用性呈现为交通信息，建立使用方法，有效地收集信息和提供信息。针对上述问题，本研究开发和研究了以下几项技术：首先，为了体现探测车数据作为交通语调的可用性，开发了利用探测车数据的路线诱导系统。与NAV…的竞争性实验结果市场上越来越多的导航系统显示出利用探测车数据的优越性。此外，通过通勤情况下的路径诱导实验，验证了所开发系统的路径诱导效果。其次，建立了有效利用探测车数据的各种方法。特别是，本研究表明，探测车数据可以分析驾驶员的路径点行为，直到最后的细节，宣泄/协调信号控制的效果，识别交通事故的共同地点，并且探测车数据可以用于更新动态O-D矩阵。此外，本研究还考察了数据收集效率的提高。在明确探测数据采集频率对大规模探测系统的实施有重要影响的基础上，提出了几种利用非频繁探测车数据的技术，并研究了探测车的最优位置问题。通过开展这项研究，解决了广域探测车系统实施中的许多问题。较少

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