II (Latest 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
,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
,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
, 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