Over a period of several months, the Connected Corridors development team worked with Caltrans to refine the high-level design for the ICM Core System. This system comprises the majority of the IT infrastructure for the I-210 Pilot, with its three major components being the data hub, decision support system, and corridor management system. The proposed system design is characterized by:
- Cloud-based design for flexibility, on-demand scalability, redundancy, and lower deployment and operational costs
- Multiple database technologies for optimized performance
- Separate data management, decision support, and control functions for configurability
- State, regional, and local layer design with flexibility for future scaling to other corridors
The following table summarizes the components:
The green elements in the diagram represent the various corridor field data sources and field element controls, including state, regional, and local transportation systems, regional transportation data networks, and private information providers.
Shown in red in the diagram, the data hub is a key component of the system. It includes:
The primary functions of the data hub are:
The decision support system, shown in blue, provides:
|The corridor management system, in purple, is expected to be a commercial off-the-shelf component that provides:|
The design of the system is based on experience the Connected Corridors development team has gained developing the modeling components of the decision support system. The modeling system is a similar decoupled design based on single-purpose services connected by messaging technology. It is fully based in an Amazon cloud environment, using multiple database technologies optimized for the type of data being processed.