IMSA Signal Technician Level 1 Exam 2025 – 400 Free Practice Questions to Pass the Exam

Question: 1 / 400

A major distinguishing feature between NEMA TS-1 and TS-2 controllers is:

Input power specifications

Data bus

The distinction between NEMA TS-1 and TS-2 controllers primarily revolves around the data bus. NEMA TS-1 controllers utilize a basic data interface that is more limited in functionality compared to TS-2 controllers, which are designed with a more sophisticated data bus that enables enhanced communication and interoperability capabilities. The TS-2 data bus supports a wider range of data communication protocols and devices, allowing for more advanced features, such as improved signal control and monitoring.

This improvement facilitates better coordination between traffic signal systems and other components, making TS-2 controllers more suitable for modern traffic management applications. The enhanced data bus in TS-2 controllers signals a shift towards more integrated and flexible traffic signal systems, reflecting ongoing advancements in technology within transportation infrastructure.

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Enclosure size

Signal capacity

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