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IMSA Traffic Signal Technician Level 1 and 2 Exams
(Complete Versions) | Traffic Signal Technician |
International Municipal Signal Association | Latest
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Traffic Signal Technician Level 1
A Load switch tester or multi-switch tester is used to: ---------CORRECT ANSWER--- --------------verify the correct operation of a load switch. The unit verified that the correct current outputs are within the acceptable range for operation. Slot testers are available that: ---------CORRECT ANSWER-----------------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. A loop analyzer is a unit that: - --------CORRECT ANSWER-----------------a signal technician uses to troubleshoot existing loops and test newly installed loops An ammeter or current probe is: ---------CORRECT ANSWER-----------------a device that measures the current flowing through a wire or circuit.
A multimeter can detect the: ---------CORRECT ANSWER-----------------resistance, voltage, or current of an electrical circuit. In the case of significant underground utility congestion or of the presence of utilities with potentially catastrophic consequences if damaged, a ______________ is a good option. ---------CORRECT ANSWER-----------------soft-dig The following are some of the items that need to be considered when determining the signal type: ---------CORRECT ANSWER-----------------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? The typical tests for traffic signal conductors are: ---------CORRECT ANSWER--------- --------functional such as the connection to the proper signal display, induced voltage, and continuity The cabinet should be oriented such the the door opens away from the intersection, and in a position that gives the field technician the: ---------CORRECT ANSWER-----------------greatest possible view Traffic signal supports that typically require some type of foundation include: ------ ---CORRECT ANSWER-----------------mast arm poles, steel strain poles, trusses, monotones, pedestal poles for vehicular signals, and pedestrian signal pedestals.
What is the primary function of the IMAS? ---------CORRECT ANSWER----------------- Safety Education IMSA Stands for ---------CORRECT ANSWER-----------------International Municipal Signal Association Which of the following is NOT an IMSA certification? ---------CORRECT ANSWER----- ------------Traffic Signal Level III Bridge Technician Which of the following are potential safety hazards? ---------CORRECT ANSWER----- ------------overhead and underground power, gas, aerial lift equipment. Tra What are the sections of a ramp mete signal ---------CORRECT ANSWER--------------- --Circular red, circular green PPE stands for ---------CORRECT ANSWER-----------------Personal Protective Equipment
A 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? Standards; requirement that have to be followed. Guidance; recommendations that are to be followed unless there I good reason not to. Objectives; reasons behind the standards and guidance. Support; additional information to clarify the standards and guidance. --------- CORRECT ANSWER-----------------Objectives; reasons behind the standards and guidance Which of the following is an example configuration fo an Emergency - Vehicle Traffic Control Signals? ---------CORRECT ANSWER-----------------Thee 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 There green interval is made up of which three components? ---------CORRECT ANSWER-----------------Minimum green, passage time, maximum green
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 ht following is NOT a common mode of operation for timing plans in a signal system? ---------CORRECT ANSWER-----------------Traffic Related Two common terms to describe traffic signal supports and signal heads are --------- CORRECT ANSWER-----------------rigid and free-swinging IN a single wire with. single point attachment configuration, the wire that supports the signal heads is called the ---------CORRECT ANSWER----------------- Messenger Wire The two nominal diameter sizes for vehicular signal lenses are: ---------CORRECT ANSWER-----------------8 in (200mm) and 12 in (300mm) The purpose of "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-----------------Advertisements Which of the following is a disadvantage of mast arms: ---------CORRECT ANSWER-- ---------------Large Foundation 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
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 fo 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 introduced 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 fo signal preemption What is NOT part of an underground power service: ---------CORRECT ANSWER----- ------------Conduit rise with weatherhead
Two common types of signal pole installations are ---------CORRECT ANSWER-------- ---------Direct buried and foundation The first type of testing performed on a controller cabinet assembly is --------- CORRECT ANSWER-----------------bench test the second type of test performed on a controller cabinet assembly is --------- CORRECT ANSWER-----------------field test Continuity is a type of test for ---------CORRECT ANSWER-----------------traffic signal conductors The most labor intensive type of vehicle detection installation 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.
Historical crash data shows that a signal would potentially improve safety conditions ---------CORRECT ANSWER-----------------Road users at an intersection submitting a sufficient number of requests for installation of a signal based on local requirements a plans preparation manual indicates 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 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 ar 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 devise is used to measure the resistance or breakdown strength of conductor insulation: ---------CORRECT ANSWER-----------------megohmmeter What device dos 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.
Which of the following is a characteristic o a good field report: ---------CORRECT ANSWER-----------------clearly written, concise, describes actions taken. Which of the following best describe 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 4 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 stands, 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 Some agencies have found the it is more cost efficient to replace the lamps: --------
- CORRECT ANSWER-----------------on a regularly scheduled basis Effective determination of the cause of a failure in a traffic signal is called: --------- CORRECT ANSWER-----------------troubleshooting what is the 5 step troubleshooting procedure ---------CORRECT ANSWER-------------- ---1. observe 2 identify 3 determine 4 correct 5 observe again
Controller cabinets can perform functions such as ---------CORRECT ANSWER-------- ---------changing the signal indications, collecting and analyzing vehicle could and communicating with other contorllers Which type of transmitter transmits low energy microwave radiation at a detection zone? ---------CORRECT ANSWER-----------------Doppler microwave radars detectors a disadvantage of video detection systems is: ---------CORRECT ANSWER-------------- ---may involve a higher initial installation cost What activates a signal loop? ---------CORRECT ANSWER-----------------decrease in inductance Loop detector installed in. double rectangle is called a ---------CORRECT ANSWER--- --------------quadrupole what drives energy through the loop detector? ---------CORRECT ANSWER------------ -----loop amplifier
a metallic pull box lid must be ---------CORRECT ANSWER-----------------bonded to a grounding source cable coiled in a pull box is called ---------CORRECT ANSWER-----------------slack cable. pull boxes should have some type of ---------CORRECT ANSWER----------------- drainage capability visibility limited displays appear dark to to drivers unless drivers are: --------- CORRECT ANSWER-----------------within the are programmed by the technician. another word for break away base: ---------CORRECT ANSWER----------------- frangible base A wire that is attache to the bottoms of the signal heads to prohibit excessive movement or spinning of the traffic signals on the support wire ---------CORRECT ANSWER-----------------tether wire
