IMSA Signal Technician Level 1 End of Chapter Questions, Exams of Advanced Education

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IMSA Signal Technician Level 1 End of Chapter

Questions with Correct Answers.

What is the primary function of the IMSA? - (CORRECT ANSWER)-Safety education IMSA stands for: - (CORRECT ANSWER)-International Municipal Signal Association Which of the following is NOT an IMSA certification? - (CORRECT ANSWER)-Y: Traffic Signal Level II Design/Engineer Technician Y: Traffic Signal Level II Field Technician Y: Traffic Signal Level II Bench Technician N: Traffic Signal Level III Bridge Design Technician Which of the following are potential safety hazards? - (CORRECT ANSWER)-Overhead and underground power Gas Aerial lift equipment What are the sections of a ramp meter signal? - (CORRECT ANSWER)-Circular red, circular green PPE stands for: - (CORRECT ANSWER)-Personal Protective Equipment

Which of the follow is an example of adequate fall protection during the operation of aerial lift equipment? - (CORRECT ANSWER)-Full body harness Safety belt Rails of a platform lift Work Zone Supervisor is responsible for which of the following tasks? - (CORRECT ANSWER)-Ensure advance warning devices have not been removed or relocated Which of the following is NOT a sentence type in the MUTCD? - (CORRECT ANSWER)-Y: Standards; requirements that have to be followed Y: Guidance; recommendations that are to be followed unless there is a good reason not to N: Objectives; reasons behind the standards and guidance y: Support; additional information to clarify the standards and guidance Which of the following is an example configuration of an Emergency-Vehicle Traffic Control Signals: - (CORRECT ANSWER)-Three-section traffic signal with circular red, circular yellow, and smaller circular yellow indications The following phases are typically assigned to the major street through movements: - (CORRECT ANSWER)-2 and 6

The green interval is made up which three components? - (CORRECT ANSWER)-Minimum green, passage time, maximum green What are the three types of recall features of a traffic signal controller? - (CORRECT ANSWER)-Minimum, maximum, pedestrian (+soft) In a coordination plan, what is the number of seconds given to each phase at the intersection? - (CORRECT ANSWER)-Split (g,y,r) Which of the following traffic signal coordination method is typically least expensive? - (CORRECT ANSWER)-Time-based coordination Which of the following is a definition of cycle length: - (CORRECT ANSWER)-The elapsed time between the start of a specific display until that display comes up again Which of the following is a characteristic of sequential phases: - (CORRECT ANSWER)-They cannot occur at the same time Which of the following is a definition for initial green time: - (CORRECT ANSWER)- Minimum time that the green indication must be displayed The only point in the cycle of a coordinated traffic signal controller where the major-street phase is allowed to end is called: - (CORRECT ANSWER)-Yield point

Which of the following is NOT a common mode of operation for timing plans in a signal system: - (CORRECT ANSWER)-Y: Time of day N: Traffic related Y: Traffic Responsive Y: Traffic adaptive Two common terms to describe traffic signal supports and signal heads are: - (CORRECT ANSWER)-Rigid and free-swinging In a single wire with a single point attachment configuration, the wire that supports the signal head is called the: - (CORRECT ANSWER)-Messenger wire The two nominal diameter sizes for vehicular signal lenses are: - (CORRECT ANSWER)-8 in (200 mm) and 12 in (300 mm) The purpose for "louvers" is to: - (CORRECT ANSWER)-Make signal visible from a specific lane Which of the following types of conduit are used for traffic signals? - (CORRECT ANSWER)- Rigid Steel Conduit High-Density Polyethylene (HDPE) PVC Schedule 40

Traffic signal supports are NOT used to display the following items: - (CORRECT ANSWER)- Y: Guide signs N: Advertisements Y: Regulatory signs Y: Overhead street sign names Which of the following is a disadvantage of mast arms: - (CORRECT ANSWER)-Large foundations Methods of signal supports include all of these except: - (CORRECT ANSWER)-N: Arched supports Y: Truss supports Y: Monotube supports Y: Pedestal supports Components of the optical unit for an incandescent lamp include all of the following except:

• (CORRECT ANSWER)-Y: Lamp socket N: Shade Y: Lens Y: Reflector

For pedestrian signals controlling crosswalks less than 100 feet, what is the required height of the symbols themselves: - (CORRECT ANSWER)-At least 6 inches Loop detectors operate on the principle of: - (CORRECT ANSWER)-Inductance The piece of cable that connects the controller cabinet to the loops is called a: - (CORRECT ANSWER)-Lead-in cable The outer jacket of loop lead-in cable is typically made of: - (CORRECT ANSWER)- Polyethylene What is the advantage of video detection systems? - (CORRECT ANSWER)-Images can be sent to remote locations Which of the following is a type of microwave detector? - (CORRECT ANSWER)-Frequency- modulated continuous wave (FMCW) A 6' X 60' loop typically has how many turns of wire: - (CORRECT ANSWER)-Two The primary function of the CMU is: - (CORRECT ANSWER)-Prevent conflicting signal indications

What is NOT part of the overhead power service: - (CORRECT ANSWER)-N: Pull box or boxes Y: Power supply wires Y: Conduit riser with weatherhead Y: Meter housing Typical back-up battery systems provide battery power in case of an outage to a signal for:

• (CORRECT ANSWER)-2 to 6 hours A major distinguishing feature between NEMA TS-1 and TS-2 controllers is: - (CORRECT ANSWER)-Data bus The Advanced Transportation Controller was developed to provide: - (CORRECT ANSWER)-Open architecture hardware and software platform Which of the following type of controller assemblies, without adapters, can accept multiple software platforms and be utilized in all types of cabinets; - (CORRECT ANSWER)- 2070 CONTROLLER wHAT IS ANOTHER TERM FOR LOAD SWITCHES USED IN 170/2070 CONTROLLERS? - (CORRECT ANSWER)-Switch packs

Which type of controller was intended to supersede the 170 controller? - (CORRECT ANSWER)-2070 controller The NEMA TS-2 standards cover the same items as the TS-1 standards but expand the requirements to include which of the following: - (CORRECT ANSWER)-Treatment of signal preemption What is NOT part of an underground power service? - (CORRECT ANSWER)-N: Conduit riser with weatherhead Y: Disconnect housing Y: Power supply wires Y: Pull box or boxes Two common types of signal pole installations are: - (CORRECT ANSWER)-Direct buried and foundation The first type of test performed on a controller cabinet assembly is: - (CORRECT ANSWER)- bench test Continuity is a type of test for: - (CORRECT ANSWER)-Traffic signal conductors The most labor intensive type of vehicle detection installed is: - (CORRECT ANSWER)- Inductive loop detection

Which of the following 'start-up' items need to be completed by the contractor prior to the physical construction of the traffic signal: - (CORRECT ANSWER)-Utilities notification and coordination Public awareness as required by the agency Approval of traffic control plan Which of the following equipment is NOT typically seen at the construction site of a traffic signal: - (CORRECT ANSWER)-Y: Horizontal boring machine for conduit under pavement Y: Aerial lift truck for above ground work N: Grader to create level intersections Y: Trencher for cable installation "Free-swinging" signal heads are located on which of the following support systems: - (CORRECT ANSWER)-Span wires Traffic signals can be installed: - (CORRECT ANSWER)-After justification is determined through a warrant study A traffic signal warrant study can determine the need of installation through all of the following except: - (CORRECT ANSWER)-Y: Traffic volumes that show insufficient gaps exist on the major street to allow minor street traffic to enter or cross an intersection

N: Road users at an intersection submitting a sufficient number of requests for installation of a signal based on local requirements Y: Pedestrian volumes indicate a need in order to allow safe crossing of a roadway. Y: Historical crash data shows that a signal would potentially improve safety conditions. A Plans Preparation Manual Includes information regarding: - (CORRECT ANSWER)- Amount of detail, information, and proper format for traffic signal plans. EEO participation requires the contractor to: - (CORRECT ANSWER)-Maintain a percentage of minority workers on the project. What is the purpose of traffic signal inspection? - (CORRECT ANSWER)--To provide a record of construction

• To document results of tests
• To verify the 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? - (CORRECT ANSWER)-8 hours Which of the following does a traffic signal designer have to take into consideration when designing a signal? - (CORRECT ANSWER)-Signal phasing Utilities

Cost Which of the following are considerations that should be taken into account when designing a new traffic signal? - (CORRECT ANSWER)-Types of preemption required Coordination with nearby traffic signals Traffic characteristics at the location Multimeters are used to check: - (CORRECT ANSWER)-Resistance Voltage Current What device is used to measure the resistance or breakdown strength of conductor insulation: - (CORRECT ANSWER)-Megohmmeter What device does a technician use to troubleshoot existing loops already installed in the field: - (CORRECT ANSWER)-Loop analyzer Resistance as expressed by Ohm's law is: - (CORRECT ANSWER)-R = E/I Ohm's law is useful in the design and troubleshooting of circuits and describes the mathematical relationship of the following: - (CORRECT ANSWER)-Voltage Current Resistance

The typical traffic signal controller assembly is powered by what type of electrical current:

• (CORRECT ANSWER)-120 volts of AC The two types of traffic signal maintenance that are typically performed are: - (CORRECT ANSWER)-Emergency and scheduled maintenance An example of emergency maintenance is: - (CORRECT ANSWER)-Power outages/surges due to electrical storm A good five step procedure for troubleshooting is: - (CORRECT ANSWER)-Observe, identify, determine, correct, observe again Which of the following is NOT typically a maintenance concern for traffic signal installations: - (CORRECT ANSWER)-Y: Effects caused by the flow of electricity Y: Weather related issues Y: Ventilation N: Lubrication A key component of documentation is: - (CORRECT ANSWER)--Developing written procedures for documentation
• Developing checklists
• Developing field reports

Which of the following is a characteristic of a good field report: - (CORRECT ANSWER)- Concise Describes actions taken Clearly written Which of the following best describes traffic signal maintenance: - (CORRECT ANSWER)- The repair or upkeep of the existing equipment and operations Checking for inconsistent indications, local construction activities, and if the signal is in flashing mode would be an example of which of the four steps in the troubleshooting procedure: - (CORRECT ANSWER)-Observe Crashes occur at signalized intersections due to: - (CORRECT ANSWER)-Driver error Vehicle equipment malfunction Roadway or traffic control device defects The best way to minimize the possibility of being named in a lawsuit is by: - (CORRECT ANSWER)-Keeping good records Strict adherence to established standards Providing comprehensive maintenance procedures

Negligence is defined as: - (CORRECT ANSWER)-The failure to do something that a reasonable person would ordinarily do When dealing with the public, a technician should: - (CORRECT ANSWER)-Avoid arguing When dealing with the public a technician should not: - (CORRECT ANSWER)-Threaten anyone Use technical jargon