The Southern California Region of Governments (SCAG) Regional ITS Architecture is a roadmap for transportation systems integration in the Southern California area over the next ten years. ITS refers to Intelligent Transportation Systems, which use electronic technologies and communications to improve the safety and efficiency of surface transportation. The SCAG Regional ITS Architecture has been developed through a cooperative effort by the region's transportation agencies, covering all modes. This regional ITS architecture was developed to satisfy the FHWA Rule 940 requirements, as well as the FTA policy directives, on ITS Architectures. The regional ITS architecture was developed based on information from a previous version of the architecture, documentation provided by stakeholders, and discussions with stakeholders.

The SCAG Regional ITS Architecture represents a shared vision of how each agencies' systems will work together in the future, sharing information and resources to provide a safer, more efficient, and more effective transportation system for travelers in the Southern California region.

Time Horizon and Services

This regional ITS Architecture has a time horizon of up to twenty years with particular focus on those transportation elements likely to be implemented in the next ten years. The ITS architecture covers the broad spectrum of Intelligent Transportation Systems, including Traffic Management, Transit Management, Traveler Information, Maintenance and Construction, Emergency Management, and Archived Data Management over this time horizon.

About this Web Site

The purpose of the ITS Architecture web site is to encourage use of the SCAG Regional ITS Architecture and to gather feedback so that it is used and continues to reflect the intelligent transportation system vision for the region. The menu bar above provides access to the stakeholders, the transportation systems in the region (the "Inventory"), the transportation services that will be provided, transportation-related functions that are envisioned, and the existing and planned interfaces in the region. For more information about using this web site visit how to use this web site. For more information about developing project systems engineering analyses using this web site visit the systems engineering analysis page.

The SCAG ITS Architecture is based on the Architecture Reference for Cooperative and Intelligent Transportation (ARC-IT) V9.2, and has been tailored based on existing and near-future regional projects of the Southern California region.