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ISMA TRAFFIC SIGNAL TECHNICIAN I ACTUAL
EXAM VERSION A NEWEST 2025/2026
COMPLETE QUESTIONS AND CORRECT
DETAILED ANSWERS|ALREADY GRADED A+
What is the purpose of traffic signal inspection? - ANSWER-to provide a record of construction, to document results of tests, to verify installation meets the requirements of the plans and contract documents.
in case of the perceived need for a traffic signal to allow pedestrians to cross a roadway, pedestrian volume counts are typically performed for what time duration? - ANSWER-8 hours
which of the following does a traffic signal designer have to take into consideration when designing a signal? - ANSWER-signal phasing, utilities, cost
Which of the following ar considerations that should be taken into account when designing a new traffic signal? - ANSWER- types of preemption required, coordination with nearby traffic signals, traffic characteristics at the location. 1 / 3
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Multimeters are used to check - ANSWER-resistance, voltage, current
What devise is used to measure the resistance or breakdown
strength of conductor insulation: - ANSWER-megohmmeter
What device dos a technician use to troubleshoot existing loops
already installed in the field: - ANSWER-loop analyzer
Resistance as expressed by Ohm's law is - ANSWER-R=E/I
Ohm's law is useful in the design and troubleshooting of circuits
and describes the mathematical relationship of the following: -
ANSWER-voltage, current, resistance.
The typical traffic signal controller assembly is powered by
what type of electrical current: - ANSWER-120 volts of AC
The two types of traffic signal maintenance that are typically
performed are: - ANSWER-Emergency and scheduled
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an example of emergency maintenance is: - ANSWER-power
outages/surges due to electrical storm
A good nice step procedure for troubleshooting is: - ANSWER-
observe, identify, determine, correct, observe again
Which of the following is NOT typically a maintenance concern
for traffic signal installations: - ANSWER-Lubrication
A Key component of documentation is: - ANSWER-Developing
written procedures for documentation, developing checklists, developing field reports
Which of the following is a characteristic o a good field report: -
ANSWER-clearly written, concise, describes actions taken.
Which of the following best describe traffic signal maintenance:
- ANSWER-the repair or upkeep of the existing equipment and
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operations