IMSA Traffic Signal Technician Level II (Latest 2024 / 2025 Update) Questions and Verified Answers | Grade A | 100% Correct
Question:
When dealing with the public, keep in mind that the routines of public users may be disrupted for periods of time during construction. How should a traffic signal field technician interact with the public? (5)
Answer:
Always be polite Be confident when speaking Communicate clearly in understandable terminology Don't argue or threaten Don't provide information if you are uncertain of its accuracy.
Question:
Traffic signal controller units of todays traffic systems are controlled by what?
Answer:
Microprocessor
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Question:
The microprocessor is programmed to recognize what?
Answer:
Input requests from vehicle detection systems
Question:
A microprocessor takes appropriate action to control intersection what?
Answer:
Timing
Question:
A forerunner of the electronic controllers that we have today was the?
Answer:
Electro-mechanical controller
Question:
What year where solid state electronic controllers developed to replace the electro-mechanical controllers?
Answer:
1970's
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Question:
What two improvements differentiated electronic controllers from electro- mechanical controllers?
Answer:
More dependable Added many more features
Question:
What was the standardization that primarily established a pin configuration in the controller and defined a function for every pin?
Answer:
NEMA TS-1
Question:
The NEMA TS-1 has three connectors which where known as:
Answer:
A,B, and C connectors
Question:
NEMA TS-1 had how many connectors?
Answer:
Three 3 / 4
Question:
The NEMA TS-1 defined every pin for each connector as either what two connection types?
Answer:
Input or Output
Question:
NEMA also allowed manufactures to add an additional feature on the fourth connector. What was this connector know as?
Answer:
D connector
Question:
What was the D connector commonly used for?
Answer:
Communications Pre-emption Other special features
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