What type of controller is the model 170 controller?

The model 170 controller is classified as an open-architecture based microcomputer. This designation highlights its flexibility and interoperability capabilities. The open-architecture design allows for the integration of various software and hardware solutions, enabling users to customize the controller according to specific traffic management needs. This kind of system typically permits the addition of different modules and applications, facilitating updates and improvements over time without needing to replace the entire unit.

This adaptability makes the model 170 particularly popular among traffic signal technicians and city planners who require robust solutions capable of evolving with technological advancements. Moreover, the microcomputer aspect emphasizes the computational power and efficiency in processing traffic data and signaling in real-time, which is crucial for effective traffic management.

In contrast, other types of controllers mentioned, like analog or proprietary systems, lack the level of flexibility and expandability that characterizes the model 170, making the open-architecture based microcomputer the most suitable classification.