GIS Applied In Urban Traffic Simulation & Analysis Software And R&D Of On-Board Unit

The road development of china is progressing at a rapid rate in the world. But it is faced with several problems, such as the low transportation efficiency, grave traffic accident, the limit of energy sources and environment, and so on. The economy of our country and people's day life has being influenced by urban traffic jam. China is in dire need of the solution to traffic jam through ITS. So the department of traffic needs a software platform for developing Chinese ITS.However, our urban traffic network has own mix characteristic, which comprises motor vehicles, non-motor vehicles, and foot passengers. The mixed characteristic differs from other countries which nearly comprise motor vehicles. So foreign traffic software is not appropriate to our traffic condition. It is very important that the native or foreign traffic simulation & analysis software improve statuses are compared, on which we are able to develop the software for our mixed traffic in order to serve for ITS.On the other hand, the drivers need require traffic information, such as park, gas station, one-way street, round street and so on. The driver familiarity to traffic information is one of the factors in traffic jam. Onboard self-determination navigation system is developed for helping drivers to obtain traffic information. So the development of onboard self-determination navigation system is very meaningful.This paper accomplishes thereinafter content, which is in the background of ITS, GIS and Embedded System.1) Our urban traffic simulation & analysis software is looked upon research object. Native or foreign traffic softwares in existence are all-round analyzed and compared. The traffic flow simulation model applied to software system is introduced in detail, and some kinds of commercial traffic software are reviewed. On that based advanced traffic integration unified simulation platform prototype model.2) The application of GIS to traffic simulation & analysis system is analyzed. A GIS methodoriented to urban traffic micro-simulation road network database is completed, which isapplied to project. See appendixII. 3) Onboard self-determination navigation system is looked upon object of R&D. Onboardunit based ARMLinux is produced, which is high processing ability, high integrated,lower cost and lower power cost. See appendix I.The organized structure of this paper: First, the meaning and aim of this paper is generalized. The difficulty of GIS application to traffic software and onboard unit is analyzed. Second, the traffic model applications and kinds of traffic project software packages in the Traffic Analysis & Simulation Software region based on the traffic model has been studied. A prototype of the traffic advanced integration uniformed simulation platform is presented in the end. Third, according to the problems in traffic software network design, one method is put forward that the urban traffic micro-network model database is based on GIS. Fourth, based on the development condition of onboard self-determination navigation system, the project of developing lower cost onboard unit is put forward. The process of design and development of onboard unit is described in detail. Last, the paper completed work is summarized and possible continued scientific research is prospected.