Concept and deployment of Internet ITS

The concept of Internet ITS is proposed with analysis of some of the key issues to achieve its goal. Our Internet ITS demo system for real-time traffic information collection and distribution via Internet which is composed of probe cars with on-board systems and server and use commercial GPRS network is then introduced. Performance of the current GPRS network for providing data services in Internet ITS is also evaluated and our field test results showed that the limited bandwidth and large delay of GPRS defers it from further deployment in ITS. High-speed dedicated road-to-vehicle communication (RVC) system is absolutely needed for future Internet ITS.