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IMSA Traffic Control Tech 1 QUESTIONS & ANSWERS(GRADED A) $12.49
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IMSA Traffic Control Tech 1 QUESTIONS & ANSWERS(GRADED A)
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High-Traffic Areas - ANSWER High-volume streets, such as arterials. Typically wide and have multiple lanes of travel. Low-Traffic Areas - ANSWER Low-volume streets such as local streets or collector streets. Typically narrow and have single lanes of travel. Insulated Hand Tools - ANSWER Tools...

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  • September 12, 2024
  • 11
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

Subjects

  • imsa traffic control tech 1 questions answersgr
  • imsa traffic control tech 1
  • high traffic areas answer high volume streets s
  • low traffic areas answer low volume streets such

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IMSA Traffic Control Tech 1 QUESTIONS
& ANSWERS(GRADED A)
High-Traffic Areas - ANSWER High-volume streets, such as arterials. Typically wide and have multiple
lanes of travel.



Low-Traffic Areas - ANSWER Low-volume streets such as local streets or collector streets. Typically
narrow and have single lanes of travel.



Insulated Hand Tools - ANSWER Tools with insulated handles, designed to protect from electric shock
when working with live electricity.



Insulated Mats/Blankets - ANSWER Safe place to stand when working on electric systrems



Circuit Breaker Finders - ANSWER Tool that helps locate the appropriate circuit breaker or fuse that
controls the electrical supply to the area.



Conductors - ANSWER Materials that conduct electricity

Ex. Most metals



Insulators - ANSWER Materials that do not conduct electricity

EX. plastic, rubber, glass, ceramic



Understanding electricity - ANSWER Electricity is similar as water flowing through pipes

Voltage is like water pressure.

Current is like amount of water.

Resistance is like the size of the pipe.

, Ohm's Law - ANSWER E = I x R



E = Voltage(Electromotive Force) (Volts)

I = Current(Intensity) (Amps)

R = Resistance (Ohms)



120 VAC/ 24 VDC - ANSWER Typical voltages used in traffic signal circuits



Calculating signal intervals - ANSWER Turning movement counts - data on traffic volume

Signal phasing- data on terrain

Minimum green time- time to clear intersection

Pedestrian clear time

Yellow & All-Red Intervals

Coordination & Optimization



Split - ANSWER Allocation of time within a single cycle for a specific movement or phase. it represent the
duration or percentage



Offset - ANSWER time difference between the initiation of signal phases or intersections along a corridor.
Effective offset can help reduce stops, improve travel times, enhance fuel efficiency



Lead Left-Turns - ANSWER protected left-turn served prior to the complementary through movement.
most common



Lag Left-Turns - ANSWER Protected left turn served after the complementary through movement. most
used in coordinated systems with closely spaced lag left turn intersections such as diamond interchanges



Lead-Lag Left Turns - ANSWER leading and lagging left turn are provided on opposing approached of the
same street

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