Traffic Signal Technician Level 1
A 6' x 60' loop typically has how many turns of wire: - correct answer-two
a Circuit that is wired in Parallel is one where: - correct answer-each component has its own
direct path.
a Circuit that is wired in series is one where: - correct answer-the current goes through all of
the electrical components of the circuit
a command that forces the traffic signal controller to end the green display for an actuated
phase - correct answer-force off
a difference between NEMA cabinets and 170 cabinets is NEMA cabinets - correct
answer-require connection with harnesses pre-wired into the cabinet.
a disadvantage of video detection systems is: - correct answer-may involve a higher initial
installation cost
A good nice step procedure for troubleshooting is: - correct answer-observe, identify,
determine, correct, observe again
a hybrid system combines - correct answer-closed loop systems with central computer
systems
A Key component of documentation is: - correct answer-Developing written procedures for
documentation, developing checklists, developing field reports
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.
A loop analyzer is a unit that: - correct answer-a signal technician uses to troubleshoot
existing loops and test newly installed loops
A major distinguishing feature between NEMA TS-1 and TS-2 controllers is: - correct
answer-Data bus
a metallic pull box lid must be - correct answer-bonded to a grounding source
A multimeter can detect the: - correct answer-resistance, voltage, or current of an electrical
circuit.
a plans preparation manual indicates information regarding: - correct answer-Amount of
detail, information, and proper format for traffic signal plans.
, 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.
Road users at an intersection submitting a sufficient number of requests for installation of a
signal based on local requirements.
Pedestrian volumes indicate a need in order to allow safe crossing of a road
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 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
A work zone supervisor is responsible for which of the following tasks: - correct
answer-Ensure advance warning devices have not been removed or relocated.
An ammeter or current probe is: - correct answer-a device that measures the current flowing
through a wire or circuit.
An electro-mechanical controller has a: - correct answer-motor that rotates the mechanism.
an example of emergency maintenance is: - correct answer-power outages/surges due to
electrical storm
another word for break away base: - correct answer-frangible base
Cabinet power panels have a series of ___________ that protect the electronic equipment
inside the controller cabinet against current overload. - correct answer-Circuit breakers
cable coiled in a pull box is called - correct answer-slack cable.
CEC - correct answer-Canadian Electrical Code
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
Circuits are wired in__________ and ___________ - correct answer-series and parallel
continuity is a type of test for - correct answer-traffic signal conductors
Controller cabinets can perform functions such as - correct answer-changing the signal
indications, collecting and analyzing vehicle could and communicating with other contorllers
A 6' x 60' loop typically has how many turns of wire: - correct answer-two
a Circuit that is wired in Parallel is one where: - correct answer-each component has its own
direct path.
a Circuit that is wired in series is one where: - correct answer-the current goes through all of
the electrical components of the circuit
a command that forces the traffic signal controller to end the green display for an actuated
phase - correct answer-force off
a difference between NEMA cabinets and 170 cabinets is NEMA cabinets - correct
answer-require connection with harnesses pre-wired into the cabinet.
a disadvantage of video detection systems is: - correct answer-may involve a higher initial
installation cost
A good nice step procedure for troubleshooting is: - correct answer-observe, identify,
determine, correct, observe again
a hybrid system combines - correct answer-closed loop systems with central computer
systems
A Key component of documentation is: - correct answer-Developing written procedures for
documentation, developing checklists, developing field reports
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.
A loop analyzer is a unit that: - correct answer-a signal technician uses to troubleshoot
existing loops and test newly installed loops
A major distinguishing feature between NEMA TS-1 and TS-2 controllers is: - correct
answer-Data bus
a metallic pull box lid must be - correct answer-bonded to a grounding source
A multimeter can detect the: - correct answer-resistance, voltage, or current of an electrical
circuit.
a plans preparation manual indicates information regarding: - correct answer-Amount of
detail, information, and proper format for traffic signal plans.
, 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.
Road users at an intersection submitting a sufficient number of requests for installation of a
signal based on local requirements.
Pedestrian volumes indicate a need in order to allow safe crossing of a road
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 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
A work zone supervisor is responsible for which of the following tasks: - correct
answer-Ensure advance warning devices have not been removed or relocated.
An ammeter or current probe is: - correct answer-a device that measures the current flowing
through a wire or circuit.
An electro-mechanical controller has a: - correct answer-motor that rotates the mechanism.
an example of emergency maintenance is: - correct answer-power outages/surges due to
electrical storm
another word for break away base: - correct answer-frangible base
Cabinet power panels have a series of ___________ that protect the electronic equipment
inside the controller cabinet against current overload. - correct answer-Circuit breakers
cable coiled in a pull box is called - correct answer-slack cable.
CEC - correct answer-Canadian Electrical Code
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
Circuits are wired in__________ and ___________ - correct answer-series and parallel
continuity is a type of test for - correct answer-traffic signal conductors
Controller cabinets can perform functions such as - correct answer-changing the signal
indications, collecting and analyzing vehicle could and communicating with other contorllers
