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Traffic Signal Design and Maintenance, Exams of Social Work

Walden UniversitySocial Work

Various aspects of traffic signal design, installation, and maintenance. It discusses potential safety hazards, traffic signal components, signal coordination methods, vehicle detection systems, controller assemblies, signal inspection and testing procedures, and troubleshooting techniques. The document also addresses considerations for traffic signal design, such as signal phasing, utilities, and cost. Additionally, it covers traffic signal maintenance, including emergency and scheduled maintenance, as well as the importance of documentation and troubleshooting. The information provided in this document is relevant for professionals involved in the planning, design, installation, and maintenance of traffic signal systems.

Typology: Exams

2023/2024

Available from 10/25/2024

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TRAFFIC SIGNAL TECHNICIAN LEVEL 1 EXAM
Questions and Answers Latest Versions 2024
GRADE A+
1. What is the primary function of the IMAS?: Safety Education
2. IMSA Stands for: International Municipal Signal Association
3. Which of the following is NOT an IMSA certification?: Traffic Signal Level III
Bridge Technician
4. Which of the following are potential safety hazards?: overhead and under-
ground power, gas, aerial lift equipment. Tra
5. What are the sections of a ramp mete signal: Circular red, circular green
6. PPE stands for: Personal Protective Equipment
7. A work zone supervisor is responsible for which of the following tasks:: En-
sure advance warning devices have not been removed or relocated.
8. Which of the following is NOT a sentence type in the MUTCD?
Standards; requirement that have to be followed.
Guidance; recommendations that are to be followed unless there I good
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TRAFFIC SIGNAL TECHNICIAN LEVEL 1 EXAM

Questions and Answers Latest Versions 2024

GRADE A+

  1. What is the primary function of the IMAS?: Safety Education
  2. IMSA Stands for: International Municipal Signal Association
  3. Which of the following is NOT an IMSA certification?: Traffic Signal Level III Bridge Technician
  4. Which of the following are potential safety hazards?: overhead and under- ground power, gas, aerial lift equipment. Tra
  5. What are the sections of a ramp mete signal: Circular red, circular green
  6. PPE stands for: Personal Protective Equipment
  7. A work zone supervisor is responsible for which of the following tasks:: En- sure advance warning devices have not been removed or relocated.
  8. Which of the following is NOT a sentence type in the MUTCD? Standards; requirement that have to be followed. Guidance; recommendations that are to be followed unless there I good

2 / 8 reason not to. Objectives; reasons behind the standards and guidance. Support; additional information to clarify the standards and guidance.: Objec- tives; reasons behind the standards and guidance

  1. Which of the following is an example configuration fo an Emergency - Ve- hicle Traffic Control Signals?: Thee section traffic signal with circular red, circular yellow, and smaller circular yellow indications.
  2. The following phases are typically assigned to the major-street through movements:: 2 and 6
  3. There green interval is made up of which three components?: Minimum green, passage time, maximum green
  4. What are the three typical types of recall features of a traffic signal con- troller?: Minimum, Maximum, Pedestrian
  5. In a coordination plan, what is the number of seconds given to each phase at the intersection?: split
  6. which of the following traffic signal coordination methods is typically the

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  1. Which of ht following is NOT a common mode of operation for timing plans in a signal system?: Traffic Related
  2. Two common terms to describe traffic signal supports and signal heads are: rigid and free-swinging
  3. IN a single wire with. single point attachment configuration, the wire that supports the signal heads is called the: Messenger Wire
  4. The two nominal diameter sizes for vehicular signal lenses are:: 8 in (200mm) and 12 in (300mm)
  5. The purpose of "Louvers" is to:: make signal visible from a specific lane
  6. Which of the following types of conduit are used for traffic signals?: Rigid Steel conduit High-density Polyethylene (HDPE) PVC Schedule 40
  7. Traffic signal supports are NOT used to display the following items:: Adver- tisements

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  1. Which of the following is a disadvantage of mast arms:: Large Foundation
  2. Loop detectors operate on the principle of:: inductance
  3. The piece of cable that connects the controller cabinet to the loops is called a:: Lead-in-cable
  4. The outer jacket of loop lead-in cable is typically made of:: Polyethylene
  5. What is and advantage of video detection systems?: Images can sent to remote locations
  6. Which of the following is a type of microwave detector:: frequency-modulat- ed continuous wave (FMCW)
  7. A 6' x 60' loop typically has how many turns of wire:: two
  8. The primary function of the CMU is:: prevent conflicting signal indications
  9. What is NOT part of an overhead power service:: Pull box or boxes
  10. Typical back-up battery systems provide battery power in case of an outage to a signal for:: 2 to 6 hours
  11. A major distinguishing feature between NEMA TS- 1 and TS- 2 controllers is:: Data bus

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  1. Which type of controller was introduced to supersede the 170 controller?- : 2070 controller
  2. the NEMA TS- 2 standards cover the same items as the TS- 1 standards but expand the requirements to include which of the following:: Treatment fo signal preemption
  3. What is NOT part of an underground power service:: Conduit rise with weatherhead
  4. Two common types of signal pole installations are: Direct buried and foun- dation
  5. The first type of testing performed on a controller cabinet assembly is: - bench test
  6. the second type of test performed on a controller cabinet assembly is: field test
  7. continuity is a type of test for: traffic signal conductors
  8. the most labor intensive type of vehicle detection installation is: inductive

8 / 8 loop detection

  1. which of the following 'start-up' items need to be completed by the contrac- tor prior to the physical construction of the traffic signal: Utilities notification and coordination, public awareness as required by the agency, approval of traffic control plan.
  2. Which of the following equipment is NOT typically seen at the construction site of a traffic signal?: grader to create level intersections
  3. Free-swinging signal heads are located on which of the following support systems: span wires
  4. Traffic signals can be installed:: after justification is determined through a warrant study
  5. A traffic signal warrant study can determine the need of installation through all of the following except: Traffic volumes that show insufficient gaps exist on the major street to allow minor street traffic to enter or cross an intersection.

10 / 8 ditions: Road users at an intersection submitting a sufficient number of requests for installation of a signal based on local requirements

  1. a plans preparation manual indicates information regarding:: Amount of detail, information, and proper format for traffic signal plans.
  2. EEO participation requires the contractor to:: maintain a percentage of mi- nority workers on the project.
  3. What is the purpose of traffic signal inspection?: to provide a record of con- struction, to document results of tests, to verify installation meets the requirements of the plans and contract documents.
  4. 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?: 8 hours
  5. which of the following does a traffic signal designer have to take into consideration when designing a signal?: signal phasing, utilities, cost
  6. Which of the following ar considerations that should be taken into account

11 / 8 when designing a new traffic signal?: types of preemption required, coordination with nearby traffic signals, traffic characteristics at the location.

  1. Multimeters are used to check: resistance, voltage, current
  2. What devise is used to measure the resistance or breakdown strength of conductor insulation:: megohmmeter
  3. What device dos a technician use to troubleshoot existing loops already installed in the field:: loop analyzer
  4. Resistance as expressed by Ohm's law is: R=E/I
  5. Ohm's law is useful in the design and troubleshooting of circuits and describes the mathematical relationship of the following:: voltage, current, resistance.
  6. The typical traffic signal controller assembly is powered by what type of electrical current:: 120 volts of AC
  7. The two types of traffic signal maintenance that are typically performed are:: Emergency and scheduled maintenance
  8. an example of emergency maintenance is:: power outages/surges due to

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  1. Which of the following is a characteristic o a good field report:: clearly written, concise, describes actions taken.
  2. Which of the following best describe traffic signal maintenance:: the repair or upkeep of the existing equipment and operations
  3. Checking for inconsistent indications, local construction activities, and if the signal is in flashing mode, would be an example of which of the 4 steps in the troubleshooting procedure:: Observe
  4. Crashes occur at signalized intersections due to:: driver error, vehicle equip- ment malfunction, roadway or traffic control device defects.
  5. The best way to minimize the possibility of being named in a lawsuit is by:: keeping good records, strict adherence to established stands, providing comprehensive maintenance procedures.
  6. negligence is defined as:: the failure to do something that a reasonable person would ordinarily do.
  7. When dealing with the public a technician should:: avoid arguing

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  1. When dealing with the public a technician should not:: threaten anyone, use technical jargon
  2. Some agencies have found the it is more cost efficient to replace the lamps:: on a regularly scheduled basis
  3. Effective determination of the cause of a failure in a traffic signal is called:: troubleshooting
  4. what is the 5 step troubleshooting procedure: 1. observe 2 identify 3 determine 4 correct 5 observe again
  5. What is as important as performing the maintenance itself?: documentation of emergency maintenance.
  6. When should documentation of a failure begin?: when a failure is traffic signal is first reported.
  7. a Circuit that is wired in series is one where:: the current goes through all of

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  1. A Load switch tester or multi-switch tester is used to:: verify the correct operation of a load switch. The unit verified that the correct current outputs are within the acceptable range for operation.
  2. Slot testers are available that:: plug into the cabinet detector card rack and enable the technician to measure voltage, continuity and or resistance for each internal connection in the cabinet.
  3. A loop analyzer is a unit that:: a signal technician uses to troubleshoot existing loops and test newly installed loops
  4. An ammeter or current probe is:: a device that measures the current flowing through a wire or circuit.
  5. A multimeter can detect the:: resistance, voltage, or current of an electrical circuit.
  6. In the case of significant underground utility congestion or of the pres- ence of utilities with potentially catastrophic consequences if damaged, a is a good option.: soft-dig

17 / 8

  1. The following are some of the items that need to be considered when determining the signal type:: What type of signal supports will be used, will pedestrian features be required, are there any unusual roadway geometric features that will need to be accommodated?
  2. the typical tests for traffic signal conductors are:: functional such as the connection to the proper signal display, induced voltage, and continuity
  3. The cabinet should be oriented such the the door opens away from the intersection, and in a position that gives the field technician the:: greatest possible view
  4. Traffic signal supports that typically require some type of foundation include:: mast arm poles, steel strain poles, trusses, monotones, pedestal poles for vehicular signals, and pedestrian signal pedestals.
  5. What NEMA TS- 2 configuration has no downwards compatibility?: type 1
  6. An electro-mechanical controller has a:: motor that rotates the mechanism.
  7. Emergency responders have two type to signal activation which are:: - manual and optical or acoustic activation.

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  1. Controller cabinets can perform functions such as: changing the signal indications, collecting and analyzing vehicle could and communicating with other contorllers
  2. Which type of transmitter transmits low energy microwave radiation at a detection zone?: Doppler microwave radars detectors
  3. a disadvantage of video detection systems is:: may involve a higher initial installation cost
  4. What activates a signal loop?: decrease in inductance
  5. Loop detector installed in. double rectangle is called a: quadrupole
  6. what drives energy through the loop detector?: loop amplifier
  7. a metallic pull box lid must be: bonded to a grounding source
  8. cable coiled in a pull box is called: slack cable.
  9. pull boxes should have some type of: drainage capability
  10. visibility limited displays appear dark to to drivers unless drivers are:: - within the are programmed by the technician.

20 / 8

  1. another word for break away base:: frangible base
  2. A wire that is attache to the bottoms of the signal heads to prohibit ex- cessive movement or spinning of the traffic signals on the support wire: tether wire
  3. where copper cables are terminated in local controller cabinets: interface panel
  4. a hybrid system combines: closed loop systems with central computer sys- tems
  5. a command that forces the traffic signal controller to end the green display for an actuated phase: force off
  6. the number of seconds from a common signal cycle point to a known point in the cycle Cush as the end of the green indication for the major street: offset
  7. for coordinated traffic cycles, all signals must have the same: cycle length.
  8. pedestrian consists of a flashing upraised hand that shall begin immediately following the walking person signal indication: -