The Traffic Data Analytical System Based On The Incident Detected Algorithm

Intelligent Transportation System (ITS) is involved in electronic technology, communication technology, network technology, computer technology and intelligent control technology and other content. The subject is one branch of the Intelligent Transportation System. Through the way of data collection, transportation and processing to achieve the real-time state of traffic system.Traffic incident detection system based on data analysis for traffic congestion phenomenon exist in Chinese urban road ,use the loop detection coil to collect the information , the speed of traffic flow, the number of vehicles and detection time can be calculated to reflect the characteristics of traffic flow. Incident detection algorithm through theoretical argument from the causes of traffic congestion; proposed dispersing traffic congestion phenomenon and the relative increment of the process of criteria and use criteria given in the crowded structure of the corresponding indices.It is completed by the program at last.The subject study that the collection, transportation, procession and published of the traffic information.1, Study the VISSIM traffic simulation software to establishment of the VISSIM simulation model for road traffic, including the importation of vehicles, detection coil, and the timing signal set.2, Through study the system interface with VISSIM, to achieve all of the external data acquisition and control, and pre-processing of the data.3, By study and use of the SQL Server 2000, to store the base data and processed data, and analysis the data after storage, design automatic traffic incident algorithm.4, Display the real-time information.After the long time results of testing, completed a very good design requirement to meet the various performance indicatorsResearch on this subject, you don't need expand the roads and the construct the roads to ease traffic situation as part of the pressure, and it can provide convenient to the citizen, and provide the proof for the road designer and manager.