Service on Demand of Transportation Information Grid System Model and Analysis Based on TCPN

Along with the application and popularity of transportation information grid system, users become more and more, original configuration can´t meet actual demand. In this paper we establish timed colored Petri net process model for Service On Demand process, which is one of the main service provided by the system. Through simulating increasing users and the amount of processes waiting for Service On Demand request, we analysis request response time change, and provide beneficial reference for extension of system configuration.