摘要: |
As one of the four priority corridors originally established by the US Congress under the ISTEA legislation, the Gary-Chicago-Milwaukee (GCM) Corridor has been the scene of numerous, ITS projects. Many of these projects such the Illinois Traffic Systems Center ( a freeway management system), Chicago Transit Authority’s Transit Management Center, the *999 cellular based motorist call in system, and the freeway management system in Milwaukee (MONITOR) system have been implemented. Others such as the upgrade of the Illinois Traffic Systems Center (a freeway management system), the toll collection/traffic management system on the Illinois Tollway, and the Borman Expressway Advanced Traffic Management System are under implementation. Concurrent with these efforts has been the development of the National System Architecture for ITS. To maintain compatibility with this architecture, a study was undertaken by De Leuw, Cather and Company to develop a systems architecture for the Corridor. One of the basic design criteria was compliance with the national architecture. This paper reviews the requirements for the national architecture and how they have been applied to the GCM Corridor. Specifically, areas addressed include compliance with nationally accepted standards including those of NTCIP and IEEE; detailing of data flows to ensure data availability by Information Service Providers; and detailing of functionality within modules/ control systems to comply with the national architecture. Other areas to be addressed include definition of market packages/user services to be in compliance with the national architecture. It is proposed that the resulting description of compliance with the national architecture could be used as the basis for other projects in the US to demonstrate the same compliance. |