Distributed Urban Traffic Simulation System

Distributed interactive simulation, the combination of simulation technology and computer network technology. since HLA was proposed in order to solve the interoperability and reusability between various kinds of simulation applications,it has become standard of IEEE in 2000. An open simulation architecture for urban traffic based on HLA can incorporates various traffic simulation applications into itself to build upa large scale,complicated ,comprehensive ,and general simulation system for urban traffic.This dissertation focuses on urban traffic simulation system based on HLA/RTI. The main contents are listed as follows:The first, This paper studied the machinism of HLA and try to find the way to improve the implementing effcience of the RTI.This paper discussed time management(TM) and data management deeply after analyzing the shortage of the algorithms about RTI TM and DDM. provide some improvement about it. and develops a rapid region matching algorithm based on one kind of filtering tree . As of TM,this paper improved Frederick algorithm.The second , the paper Established a vehicle action model, including car following model, lane changing model and nearby vehicle's effect model after takeing enough consideration of the nearby vehicle's influence and drivers' response delay, which makes the model more realistic. Developping an urban traffic simulation system, According to HLA/RTI,we develop raw urban road traffic simulation system based on HLA/RTI.