100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
IMSA Traffic Control Tech 1 Questions with solutions 2024 $15.49   Add to cart

Exam (elaborations)

IMSA Traffic Control Tech 1 Questions with solutions 2024

 5 views  0 purchase
  • Course
  • IMSA Signal technician
  • Institution
  • IMSA Signal Technician

IMSA Traffic Control Tech 1

Preview 2 out of 8  pages

  • August 30, 2024
  • 8
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • IMSA Signal technician
  • IMSA Signal technician
avatar-seller
julianah420
IMSA Traffic Control Tech 1


High-Traffic Areas - answerHigh-volume streets, such as arterials. Typically wide and
have multiple lanes of travel.

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

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

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

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

Conductors - answerMaterials that conduct electricity
Ex. Most metals

Insulators - answerMaterials that do not conduct electricity
EX. plastic, rubber, glass, ceramic

Understanding electricity - answerElectricity 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 - answerE = I x R

E = Voltage(Electromotive Force) (Volts)
I = Current(Intensity) (Amps)
R = Resistance (Ohms)

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

Alternating Current - answerThe electrons flow in a switching direction going forward
and backwards. In a power grid usually 120 Volts at 60 cycles per second(Hertz)
EX.Powers homes, businesses, factories

Direct Current - answerelectrons flow in one direction
5, 12, 24 Volts usually

, EX. Batteries, power supplies

Bonding and grounding - answerJoining metallic parts and using them to provide an
electrically conductive path to the ground

Phases - answerThrough phases are typically even numbered and left turn phases are
odd numbered. Phases 1- 2- 5- 6 are the main street, while 3 -4 - 7 -8 are the side
street

Concurrent group - answerphases that are grouped on the same street. phases usually
turn on with the the others in their group. divided by barrier, e.g main street/ side street

Ring - answeridentifies phases that may operate one after another. organizing
conflicting phases such as a left turn not being on while through is on the opposite way.

Barrier - answerSeparates opposing phases to avoid conflicting movements at the same
time. Also helps in rings relationship

Protected Phases - answerProvide exclusive right-of-way to a specific movement,
allowing passage with no conflicting traffic

Permissive Phases - answerAllow movement to proceed with caution when there is a
gap in conflicting traffic. Usually yielding or giving right of way to crossing traffic

Calculating signal intervals - answerTurning 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 - answerAllocation of time within a single cycle for a specific movement or phase. it
represent the duration or percentage

Offset - answertime 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 - answerprotected left-turn served prior to the complementary through
movement. most common

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

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

Guaranteed quality through customer reviews

Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.

Quick and easy check-out

Quick and easy check-out

You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.

Focus on what matters

Focus on what matters

Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!

Frequently asked questions

What do I get when I buy this document?

You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.

Satisfaction guarantee: how does it work?

Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.

Who am I buying these notes from?

Stuvia is a marketplace, so you are not buying this document from us, but from seller julianah420. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for $15.49. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

80461 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy study notes for 14 years now

Start selling
$15.49
  • (0)
  Add to cart